Combining an Attic Vent Fan with a Roof Ridge Vent

Our contractor installed a ridge vent on our roof. We were still getting significant heat build up in the attic, so he then installed a solar roof fan that moves 500 CFM (cubic feet per minute). I noticed you said that these two systems should not be combined. Should we remove the solar vent fan? -Ron

Hi Ron,

Attics are vented using the natural circulation that occurs when hot air rises. Vents in the soffit beneath the eaves at the bottom of the attic draw in cool outside air while gable or ridge vents at the peak of the attic allow heated air to exit. In hot climates, a power vent fan is often mounted behind a gable vent or cut into the roof near the peak to assist this process by forcibly expelling additional hot air from the attic.

Combining an attic power vent fan with a ridge vent is usually not recommended because:

  • It could reverse the natural flow of hot air out the ridge vent.
  • If air is drawn in through the ridge vent while it’s raining, it might pull rainwater in with it, which could lead to leaking or mold in the attic.

While a power vent fan combined with a ridge vent can work against the natural flow of air through the attic, it will still exhaust more hot air than not having a fan at all, it’s just not the most efficient way to go about it.

Since your solar vent fan only moves 500 CFM (a third to half that of a typical hardwired attic vent fan), it probably won’t move enough air to reverse the action of the ridge vent. Also, since the fan is powered by the sun, it should turn off when the sky is overcast during a storm, which will keep it from drawing rain into the attic.

So, while it’s may not the most efficient way to cool an attic, in your case I would continue using the solar vent fan. You might want to check the attic occasionally when it’s raining to see if there is any water coming in the ridge vent.


Further Information


  1. what if you installed fans mounted upward next to the ridge vents forcing air from the soffit vents, would this cool off your attic saving on your ac from working so hard

    • Hello Doug-The problem, as stated by a roofing expert, is that if the fan, mounted in the roof just below the peak of your roof is running in close proximity to an existing or newly installed roof ridge vent, that the fan can possibly pull hot air, as well as moisture,either rain or snow, through the ridge vent and into your attic. This unwanted extra moisture(or extra hot air) in the attic space can damage your stored belongings and possibly cause mold to grow in the sheeting, either plywood or osb board which the roofing material is attached to. So I hope this helps and the gentleman Danny can probably add his input also, and take care and stay well-df in Oxford,NC retired electrician

  2. I was wondering if the same issues mentioned in the article apply when you mix ridge vent with other passive venting at the peak of the roofline? In my situation I believe I need more venting at the top of the attic but there is no more space to add ridge venting and I would rather not add a gable. If I add passive venting such as the whirly bird vents or similar do you still have the issue of pulling air/rain through the ridge vent?

    • Hi Cameron,
      Since turbine vents don’t have much sucking power, I would think it would be okay to put them near the ridge, or you could add several of the smaller unpowered vents that are made to be installed on a roof. Good luck with your project!

  3. My attic has soffit and ridge vents. I checked them and they seem to be done properly, but my attic still gets very hot. You said adding a roof fan isn’t very efficient with this system. Where could I put a fan to increase circulation and efficiency in my attic? Doug Commented earlier about installing a fan inside the attic pointing up at the ridge vent. Would this work?

  4. We have a single story house, approx 2800 sq. ft. with ridge vents on a steep roof (12×12). Te air intake is thru holes in vinyl soffits

    The attic temp gets up to 129 – 130 deg with the summer heat in Covington, LA, and our electric bills get to $400/month. We had an energy consultant suggest that we add 2 or three whirly birds near the top of the roof near the ridge vents.

    I see from information that I found online that that we shouldn’t mix different types of exhaust vents since one type may pull from the other.

    What do you suggest?

  5. I have an attic that has a square floor. I have perforated soffit vents extending around the entire perimeter of the floor. I have a powered attic fan controlled by a thermostat. Each side of the roof is sloped, so the sides of the roof meet at the top of the roof in a very short ridge vent about three feet long. It seems from what I have read that having both a powered fan and a ridge vent at the same time is taboo. However, in my case, since the ridge vent is so short (too short for adequate ventilation without a powered fan in my opinion), isn’t it wise to stick with both a powered fan and a ridge vent in my case when I replace my roof?

  6. My husband and I just bought a brick home with vinyl tiny holes in the soffit area, these let no light at all into the attic. The home has a thermostat based electric fan mounted near a peak in the roof, but it also has 2 gable-end vents and ridge venting. I believe the previous owner recognized they had a problem, but never investigated the soffit. How do we fix it at this point? It appears to have been designed to be continuous, but someone either closed it all in with plywood or forgot to leave it open? Thanks for any input. We just want to make sure we get it right and stop all the moisture before it is a problem.

  7. Check to make sure: can see daylight through your soffit vents,if not redo them, contiuous is better than other forms. have baffles in the attic to keep the insulation from blocking the bay. much ventilation do you need lxw divided by 1.5 is total, then divide by 2 so half is for soffitt and half for roof. ex. your house is 32×24=768 divided by1.5=5.12 then divide by 2 for equal parts soffitt and roof.the answer is 2.56. this figure you can multiply by 144 to get square inches.
    4.if you have a ridge vent and if it is not effective (most brands arent, add old fashioned roof vents, the average on requires a hole with an 8 inch diameter.
    5.stick to the formula for the roof as close as possible dont worry if you have to much soffit vent,especially if you have electric fans.
    The other school of thought is to eliminate both soffit and roof vents alltogether and spray foam the attic ceiling and treat it like any other conditioned space of your house.

    • spraying foam under the roof deck scares me. If you have any water penetration through the overlaying deck/roofing, the water will stay for a long time between the foam and the deck. The moisture there will lead to problems with deterioration of the roof deck and possibly more. I know people are doing this, but I would be afraid of creating other problems you might not see for a long time.

      • Thanks for sharing your thoughts with the Today’s Homeowner community!
        TH community members helping other TH community members — we love it. 🙂

  8. Danny: Our 2-story home with a walk-up attic recently had a new roof installed with the addition of a ridge vent. For air intake – there are absolutely no soffit vents, and only a few static vents placed low on the shady side of the roof. I’m concerned that we are still very short on cool intake air. The attic has two north facing dormers. I’m considering installing two solar powered gable fans – in the dormers, with the airflow reversed. The goal is to have the fans introduce the cool air from the north/shaded side of house – into the attic to cool & exhaust through ridge vents. Am I creating any headaches?

  9. Hi….I live in Florida, have a hip roof with ridge vents and unobstructed soffits. On sunny summer days it still get unbearably hot up there, and is the reason I think my AC continues to run at night even though it’s cooler outside than my thermostat setting.
    I’m not about to put any more holes in the roof (hurricanes), but I’ve considered putting a vent fan blowing upwards into the roof in the soffit. It seems to me it would bring cooler outside air into the roof area, and the increased pressure would force the warmer air up through the vents. Working off of a thermostat, set to 100 or so degrees, I wonder if such an arrangement would increase airflow up and out of the roof.
    Any thoughts on the matter?

  10. I’m with Mike McGee.

    I’m in Florida and would like to take a gable fan and mount it on my off-ridge vent blowing up/out. I don’t have any gable ends, it’s all hip-roof design.

    I’m looking for reasons why won’t this work.


  11. I have a theory that if I add a fan to the ceiling of my attached garage (drawing air from around the garage door and glass block window vent – blowing up into the attic) it may help draw more air from the soffit vents. This may only work on the South side of our attic where most of the sun hits the roof. Thoughts?

  12. I have a large home with a second story. The roof has ridge vents and soffit vents. i want to install a powered vent system to pull the cooler air from under the soffits but I do not want to pull the hotter air in from the ridge vents. Is there a sheet metal duct like system that can be installed in my attic to mount the exhaust fans in so that they will blow air out of the ridge vents and only suck cooler air from the soffit vents?

  13. I have a 1950 built house. Sometime after that a family room 15×12 was added. 1950 insulation and only a gable vent.
    Cement slab under addition and there are no registers in this room to bring in heat or ac. What they have is a gas heater thru the side wall of this brick addition. This is a home that I just purchased–its summertime and I am getting ready to move in. Problem I have been working in this room painting, it is unbelievably hot and the attic from inside has no access—is not available from the existing house. I need to cool my attic first of all –no ridge vent and can I install say ridge vent or wind powered turbines from the outside only? No access to this small attic from inside. Old type ceiling and I dont want to tear it down.
    What suggestions to cool this attic?

  14. Larry Cooper – I installed a fan to blow into my attic. The goal is to have the fans introduce the cool air from the outside of house – into the attic to cool & exhaust through ridge vents.
    See my 05/03/2012 post above.

  15. I am interested in adding a second attic fan because my attic really gets hot. The contractor suggested sealing up 15 feet of ridge vent above each of the 2 attic fans. He says the reason for doing this is so the attic fans don’t draw hot air from the ridge vents. Does this make sense?

  16. I have a similar issue with a very warm attic after having ridge vents installed when I replaced my shingles. Unfortunately, I did not measure the temperature with the old vented roof, but with the ridge vents the temperature as measured by an Acurite outdoor thermometer in the attic has gone as high as 155 degrees in the summer. Not sure if I trust the thermometer but it is pretty hot.

    I tried leaving the access door to the attic open to see if more input air would help – no difference at all. Tried mounting a 20″ box fan blowing air into an intake vent and maybe 5 degree cooler at best and maybe cools off sooner at night.

    I’m currently thinking of mounting an intake fan on one side of the house and an output fan on the onther.

    I really wish I’d measured the temp before the new roof, but I didn’t. Still as others are reporting my attic is hotter than I would like and I have ridge vents.

    Are some brands of ridge vents better than others?

  17. Hi there I have four ridge vents running across my second story. I was thinking about putting a powered exhaust fan in the gable.Do I need to put two or one and another non powered vent at other gable? Or should I just stay away since I read it can suck in rain through roof vents thx

  18. Everything I’ve read has indicated to not add separate out take vents when we have ridge vents. Still, I’m not very happy with my attic getting up to 155 on hot summer days.

    I’ve receive 1,000 sq ft of ventilated reflective foil that I plan to lay across the top of the insulation in the attic. This will not lower the temperature in the attic in the summer, but I can’t bring myself to put the foil right under the rafters.

    The people that seem to think the attic temperature is not a problem seem to be mostly the people that sell shingles.

    I may “bite the bullet” and put a gable in take fan at one end and a gable out take fan at the others.

    It is common to find posts by others with ridge vents that wish their attic temperature was lower. What I don’t know is if the attic temperature was lower, before switching to ridge vents.

  19. I live in an 1872 sq. ft. colonial in New Hampshire. The home is 3 years old and just recently I had a neighbor (who has the same size home tell me he has mold in his attic. I checked mine and sure enough just like my neighbor I have mold growing on the north side of my roof… We have soffit/ridge vents. I’ve had 5 more neighbors (all with the same house look and sure enough they all have the same problem??? Could it be that the ridgevent is not allowing enough air flow and I need to install one that allow more air flow? One of my neighbors added 4 more inches of blown in insulation after sealing all possible points of humid air entry including bathroom vent fans, smoke detectors, etc. and that did nothing to help….any ideas? Thank you!

  20. I started monitoring my attic temperature after installing ridge vents with my new roof and on hot summer days, gets up to 155. Unfortunately, didn’t measure the temperature before installing the ridge vents. Have enough attic floor insulation, does not seem to heat up the house, but still would like it to be cooler in the attic. I first tried leaving the attic access open thinking not enough intake air – no benefit. Then tried mounting a 20 inch box fan on the outside of the intake vents blowing air in – maybe 5 degree benefit and very slight faster cooling at night. I’ve purchased 1,000 sq ft of attic perforated foil that I plan to lay over the floor insulation, but haven’t installed yet. Shouldn’t change the actual attic temperature or maybe make it higher in the summer (might keep heat from going into the house). What we really need is someone to compare traditional venting with ridge vents to see if ridge vents really do leave the attic hotter or if it is just the people with ridge vents are monitoring the temperature.

  21. Thank you for your website, it has been very helpful!
    We have an 11 year old home that was built with gable and ridge vents in conjunction with the sofits. About 5 yrs ago my husband installed a electric attic vent fan because our 2nd floor gets extremely hot in the summer. A couple of days ago after going into the attic we noticed mold growing on the trusses. Is this do the electric vent fan? Can it just be unplugged, or do we have to seal it up somehow? If yes, what would be that best way to do that? Thanks so much

  22. I do not notice soffits on my house and am about to have a new roof put in, with ridge vents. I currently have 2 attic fans and the roofer suggested I remove them and seal the holes. Should I keep the attic fans since there are no soffits?

    Can soffits be added in order to make the ridge vents more effective? For what else can I check in order to make sure ridge vents work?

    Roof is a lot of money and I just want to make sure that I get the most comfort and protection from the new roof.

    Thank you all for the information.

  23. Roof Replacement – Roof as insulator. Two years ago, I had a complete roof tear down and replacement. 1 layer of cedar shingles, and 3 layers of composite shingles were removed. After 2 summers with the new roof, I am amazed to learn how much insulating value the old 1-cedar and 3-composite layers offered, compared to the new plywood base and 1-layer composite. makes complete sense. 4 roofing layers vs 1.
    Don’t forget to take this into account if you are performing a complete roof teardown.

  24. ….not much experience with roofs, but it seems to me if you kept one fan and screened the other hole, you could exhaust the hot air under your roof, without drawing air from inside your house.

  25. Ridge Vents are designed to permit hot air to rise to the highest point of the roof (ridge), and exit through the ridge vent. Basic physics would say that for the hot air to escape, need some method of allowing cooler air in to replace it.

  26. If you use a power vent to exhaust hot air out of your attic you need to block your ridge or roof vents and make sure your soffit vents are open before any efficiency is established. Otherwise hot air is drawn in from the roof or ridge(this is called short circuiting venting) All you are doing is replacing hot air with fresh hot air. Open your access to the attic. This will show you if the exhausted air pulling air out. At times I have seen this be the method to expel the hot air that accumulates in the house(ceiling air)

  27. I’ve always heard these covered metal cylanders mounted on the comb of the roof are very efficient. they rotate with the wind, and do a good job pulling hot air out of the attic. They need to be installed, to prevent leakage.

  28. My original house attic area is about 1550 sq. ft I added an addition which is 90 degrees to the original house. The attic space there is about 1450 sq.ft. The original house has gable vents. There is a a powered thermostat controlled gable fan in front of one vent. I have a combination of vented and unvented soffit. One vented to two unvented except for a bedroom (300sq.ft) which has 1 vented to 1 unvented. This room has a cathedral ceiling and is the hottest room. There is continuous ridge vent installed in the entire roof.
    Last year I raised the temperature on the fan thermostat so it rarely kicked on. It actually seemed cooler in the house with AC running. This year the fan died. I bought a new fan but have started reading about the negative issues associated with interruption of the natural circulation.
    I leaning towards not using a gable fan, however the room with the cathedral ceiling is a concern. Perhaps I should have 100% vented soffit installed….at least for the one problem area and return the fan…….
    Thoughts/ comments are appreciated.


  29. RIDGE VENTS – ADDING PASSIVE OFF-RIDGE VENTS: I’m a Real Estate Broker so I’ve heard different views from home inspectors. My office has a hip roof with ridge vents – in my opinion, there is far too little ridge for proper ventilation. I want the builder to add a 4-6 off-ridge passive vent to improve the hot air release.
    Just had a reputable local roofing company tell one of my sellers that her cracked shingles are a result of thermal damage. He said that the turbines added to the ridge vents are the problem. Please help. TIME SENSITIVE.

  30. I have a cape cod with half the 2nd story as a walk-in attic. I live in the upstate of SC but we do have a lot of humidity and I just had to have my attic cleaned of white mold. I do not have soffits and cannot add them. I have ridge vents and gable vents with a powered fan at one end to suck the hot air out. I think the ridge vent is ineffective without soffit vents so the powered gable vent fan probably makes more sense. I’ve talked to numerous roofers and contractors and none have been terribly helpful. What is the best way to block existing ridge vents? The roof wood sheathing has been cut so I’m not sure if I should have a roofer remove the ridge vent or if I just need to have someone block the ridge vent from the interior. The mold appears to have started low at the eaves so I need to get more air circulating without having the luxury of lower intake vents. I would appreciate any advice! Many thanks!!

  31. I have ridge vent only running across the top of the roof. I have no soffit vents or eve vents on the side of the house. Will mounting an exhaust fan pointing toward the ridge vent push the air out helping cool down the attic space? How big of an exhaust fan do I need?

  32. Just reading through the comments about the use of a ridge vent vs. an exhaust fan or combination. I recently had two quotes from roofing contractors. One insists on using the ridge vents with no exhaust and the other sides with the use of exhaust fans. In the case of ridge vents, when heat builds up inside the attic, it makes sense that there should be a means of moving the hot air out other than relying on “natural” ventilation, especially if there is little to no air movement outside. My thoughts are the use of an exhaust fan at one end and a vent at the other to help pull the hot air out of the attic and create circulation. The ridge vents would help supplement the fan, or possibly not even use them. Given the temperatures using just ridge vents, that indicates that it just isn’t enough. You would think after all this time, there is a “best practice”. The varying opinions from roofing contractors adds to the confusion. Look at it this way, if you have no air conditioning in your house and you open the windows, you get relief. If you use fans, it’s even better since you’ve improved the air movement in the house.

  33. I wanted to give some simple rules on ventilation.
    One: you dont want to mix exhaust venting types. Meaning you cant have ridge vents with either electric, whirly birds or box vents, nor gable vents if you can help it.
    Two: the highest vent will pull air from the next biggest opening below it. So if you have a ridge vent it will tend to pull air from the soffits unless you have another opening before the soffit—ie box vent, electric vent, whirly bird, or gable vent.

    Best solution is Electric attic roof mount with soffit vents only.
    Next is electric gable vents that suck outward if you have soffit vents.
    If you have Gable vents close them off if you use other type of exhaust vents with soffit vents.

    If you dont have soffit vents( and cant add some), but have gable vents, the use electric gable vents, one exhaust and one intake on opposite sides of roof. Else if you dont want to use electric gable vents then use whirly birds with the gable vent.

    Learn from the Lomanco Smoke House demo on youtube. Soffit vents are really needed in order to move hot air out by bringing in cooler air from below.

  34. i have a cape cod with the top floor converted to bedrooms. the small attic above has a ridge vent cut into the roof and i have gable vents on either side. there are no soffit vents. i have a central air fan unit in this attic. in hot weather the bedrooms get up to 90 degrees. sometimes the central air still doesn’t cool the rooms. i want to install an exhaust fan on one of the gable vents to cool the attic. my thinking is if the attic is cooler the bedrooms might not get so hot and the fan unit might work better. is this the proper way to go? will the gable exhaust fan work efficiently with the ridge vent?

  35. I have an attic where temperatures push 136+ degrees. Aside from all arguments about how to cool effectively, and that radiation from the roof into the attic is not countered by exhaust and intake of air, I need to cool that space as electrical wire beings to fail around those temperatures. So I’m terrified of that.

    The extreme heat from many years has affected the insulation I’m sure, and allows more penetration by conduction through the ceiling.
    The house is shaped like a capital T, with the entire west side of the longer leg… getting full sun from noon till sunset.
    I have about 2500 sq ft (or more) of space.
    There are no soffits, and not enough eave to even install them.
    There are 2 chimneys with 6″ openings all around thus connecting them to the dirt crawlspace air.
    The crawlspace vents have been closed and are never opened.
    The crawlspace air is dehumidified to 55% RH, and heavy plastic was used to (mostly) cover/seal the earth.
    There are 2 large powered vent fans in separate legs of the roof, exhausting attic air.

    I’ve stuffed some insulation around the chimney opening — should I undo this? The chimneys are close to the fans so I thought it useless to suck up air from the crawl only to jettison it right out the roof. PLus in the winter, any heat from the house will quickly get up in to the attic this way.

    Can I install a passive gable vent on the ends furthest from the exhaust fans, to pull in outside air and maximize flow through the fans? Someone said it’s stupid to pull in hot outside air, but even at 100 degress that’s still cooler than my attic…

  36. Hi, I just heard that whirly bird should not be installed together with roof ventilator. Doing so will void the manufacturer shingle warranty. is this true


  37. I have an attic with soffits and a ridge vent across the majority of the roof peak. My 2nd cooling/heating zone HVAC unit is in the attic. The temperature on a sunny day is upwards of 112 degrees and it is affecting the cooling efficiency of the coil. The register temp ranges from 62 to 65 degrees with the coil at 54 degrees during the heat of the day but is at 54 to 57 degrees when the sun does down. The HVAC unit runs 10 to 12 hours/day because of this heat load. I want to add an attic exhaust fan to reduce the heat load and to help cool the 2nd story during the day. I have read, however, that this should not be done. Can you give me your opinion? Thank you!

  38. An attic fan is solving the wrong problem and creates more problems of its own.

    The heat you feel in your attic is radiant heat. Sunlight strikes your roof, causing radiant heat to be emitted from the underside of the roof. This radiant heat in turn heats up the rafters and everything else in the attic.

    An attic fan does nothing to slow or stop radiant heat exchange. The only effective means are more insulation (preferred) or a radiant barrier up against the inside of the roof.

    Attic fans suck air out of the attic to the outdoors. This means that every leak in your house allows cool, air conditioned air to be sucked into the attic. Think light fixtures, outlets and switches, fans, and even the general construction around things like your AC grills.

  39. We have a bonus over a 3 car garage on a ranch house with lots of different angles of constructed roof which only allows 2 small soffit areas on that end of the house in the front and rear of the house. Since we had a new roof put on with a ridge vent, there is not much air flow up in the attic on that side and getting moisture and getting real warm up there when the sun is out. There is not much space from the attic floor to the tip of the roof where the ridge vent is, maybe 3 ft. Can we put a 1500 cfm exhaust fan with a thermostat and humidistat a little down from the ridge vent in that area, to draw more up there from them small area soffits and air from the other end of attic, where there’s lots of soffits? Thank You. Roger Killingbeck

  40. We live in Central Texas. We installed an 18″ temp controlled Gable Exhaust Fan set at 80 degrees over garage 2 years ago and have seen our electric bill in summer not get closer than $20.00 to bills before and our attic temp has been 15 to 20 degrees cooler checking same place at same time. All these numbers are based on the 4 or 5 times I’ve checked during summers. I’m thinking of an improvement… of running a AC vent 14″ line from say 2 feet below roof ridge down to this gable vent or to the other gable adding another Gable Exhaust Fan to pull out more of the risen heat in the attic that what we have with our vent only 1 1/2 ft higher than ceiling in home.

  41. Hi, I plan on installing 2 fans and 2 solar panels for the attic fans, one pulling and one pushing air. Can this be beneficial in order to keep the static pressure neutral and keeping flow moving from one end of the roof to the other?

    • Hi, Jhovan,

      Danny says, “I would not recommend using a fan to introduce air into an attic. It is far more beneficial to have a thermostatically controlled exhaust fan that would turn on around 110 degrees and exhaust the hot moist air.

      “However, it will only work properly if you have a sufficient amount of air intake through your soffit vents.

      Good luck!”

  42. How do i know if the house I’m inspecting has enough ventilation for the roof? House is 85’x26’. The ventilation is soffits, both gable and one power vent in the roof.
    The basic formula is 1 square foot of net free vent area per 300 square feet of attic floor space, evenly divided high & low.
    How do I calculate the power vent in this equation? There are no roof vents. So I reported, “recommend additional ventilation”. The home owner is questioning what he needs to install.

    • Hi, Scott!
      We provide questions to Danny on a weekly basis. We’re not able to answer every question due to the high volume of mail we receive, but we sure do our best. 🙂
      If this is a timely matter, it might be best to contact a local authority.
      Thanks so very much for watching, and for visiting

  43. We have a Tudor revival from the 1930s. Recently a tree hit the house, this required a new roof. Our contractor installed ridge vents; however he left the turbine vents and gable vents (with powered fans) in place. Could we benefit from turning the powered fans around, so that we are pulling outside air in, forcing airflow out the ridge vent. I forgot to mention, we don’t have soffit vents. Thanks!

    • Hi, Mike,

      Danny says, “First of all, Tudor homes are some of my favorite homes of all times, but in terms of your attic ventilation, ridge venting and power roof vents or turbines work against each other.

      “Ridge venting with adequate soffit air intake, or soffit ventilation, is a very efficient, effective passive way of exhausting the hot, moist air out of your attic. I would not suggest blowing any air into your attic space at all, but I would consider closing off all vents other than your ridge venting if you have sufficient soffit venting.

      Good luck!”

  44. I’ve read that adding a vent fan to the gable with ridge vent is bad b/c it may reverse the natural flow of hot air plus draw in rain. I was curious. I have ranch house that has ridge vent, soffit vents and two gables. I added a attic fan, 1500cfm onto the gable, but i have the airflow coming in from the outside instead of pushing air out. this will allow the outside cooler air to enter the attic and the natural flow of hot air will rise out of the ridge vents. the other gable on the end of the house is just open. the attic fan on the gable is on the north end, no sun is facing.


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