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10 Best HVAC Companies in Denison, TX

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Written By Bradford Cuthrell

Last Updated April 2024

If you're like the average American, more than half of your energy bill (55%, per the U.S. Department of Energy) goes toward heating and cooling your home. In Denison, a lot of that energy use likely goes toward cooling off during the warm summer months. In fact, Denison residents spend, on average, $110 a month cooling their homes.

Our list of the top HVAC companies in Denison can help you get your system into its best shape ever, allowing you to save money while staying comfortable.

Top 10 Best HVAC Companies in Denison

Webb's Electric Heating & Air

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214 E Mulberry St, Sherman, TX 75090 (903) 866-7426 webbselectric.com

Reliable customer support

Clear pricing policy

Informative resources

Services Offered

Indoor air quality
Emergency services
Ac repair
Ductless
Furnace repair
Ac installation
Maintenance
Filtration
Ventilation
Furnace installation

Markl & Sons Cooling & Heating

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119 E Brockett St, Sherman, TX 75090 (903) 893-3060 marklandsons.com

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Clear pricing policy

Reliable customer support

Services Offered

Ac repair
Maintenance
Furnace installation
Indoor air quality
Ac installation

All Seasons HVAC Services

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191 Esquire Dr, Denison, TX 75021 (903) 463-4822 allseasonshvacservices.com

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Free quote

Reliable customer support

Services Offered

Furnace installation
Ac repair
Ac installation
Indoor air quality
Maintenance
Furnace repair

Alverson Refrigeration Inc

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612 US-69, Denison, TX 75021 (903) 465-1466 alverson-refrigerationheatac.com

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Clear pricing policy

Reliable customer support

Services Offered

Maintenance
Ac installation
Furnace installation

Sisemore Services

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4708 North Frisco Rd, Sherman, TX 75090 (903) 893-0801 sisemoreservices.com

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Reliable customer support

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Services Offered

Ac installation

Thompson Heat and Air

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3621 Pottsboro Rd, Denison, TX 75020 (903) 463-8888 thompsonheatandair.com

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Maintenance
Emergency services
Furnace installation
Ventilation

Johnson's Heating Air Conditioning & Refrigeration

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510 E Ryan Ave, Calera, OK 74730 (580) 434-7215 johnsonsheatandair.com

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Free quote

Reliable customer support

Services Offered

Duct cleaning
Inspection
Indoor air quality
Emergency services
Maintenance

T-L-C REFRIGERATION

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334 N3740 Rd, Durant, OK 74701 (580) 931-3820 tlcrefrigerationheatingandair.com

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Services Offered

Ac installation
Emergency services
Maintenance
Inspection
Duct cleaning
Ac repair

Texoma Maintenance & Refrigeration

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367 Silo Rd, Durant, OK 74701 (580) 924-9973 texomamaintenance.com

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Reliable customer support

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Maintenance
Ac installation
Furnace installation
Inspection
Indoor air quality
Ac repair
Emergency services

Airview AC

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424 E Van Alstyne Pkwy, Van Alstyne, TX 75495 (972) 658-1784 airviewac.com

Reliable customer support

Free quote

Clear pricing policy

Prompt service delivery

Informative resources

Services Offered

Ductless
Furnace repair
Ac repair
Emergency services
Indoor air quality
Ventilation
Ac installation
Furnace installation
Maintenance
Inspection
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

An HVAC system that's not working properly or old likely needs professional attention for maintenance or replacement. Watch for these indicators that your system needs service:

  • Frequent breakdowns and need for repairs
  • Rust, corrosion, or cracking
  • Odd noises when turning on
  • Higher than normal energy bills
  • Poor air circulation or uneven heating/cooling
  • Refrigerant leaks
  • Temperature control issues or thermostat malfunctions
  • An HVAC system that's over 15 years old

If you notice any of the above, it's wise to have a local HVAC technician inspect your system. They can identify problems and let you know whether repair or full HVAC replacement is needed.

Cost of HVAC Installation and Maintenance in Denison

HVAC installation or maintenance prices vary depending on your system. Common HVAC unit varieties include the following:

  • Split or mini-split: If your home's ductwork can't accommodate a central HVAC system, you probably have a split or mini-split system. Split systems have indoor units in each room to regulate temperature; these indoor units all connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions in the same way as a normal split system, but has the advantage of being able to draw power from either gas or electric sources.
  • Heat pump: Heat pumps exchange hot and cold air between your home and outside. These systems don't make their own heat or AC, so they work more effectively in milder climates and may not be as effective during Denison's hot summers.
  • Packaged heating and air: Packaged HVAC systems work best in smaller houses. They consist of a single combined air conditioner and heating unit, usually located in a basement or attic. This unit is typically compact, energy-efficient, and straightforward to maintain.

HVAC maintenance prices differ depending on what services are needed. HVAC systems are complex and may require different kinds of maintenance. Prices for common services are as follows:

HVAC Unit TypeCost
Split$1,910-$4,869
Hybrid Split$3,870-$7,130
Heat Pump$2,997-$30,535
Packaged Heating and Air$251-$418

Ways to Save Money on HVAC Costs

Fixing your HVAC by repairing or replacing parts when needed is crucial, but can be expensive. Thankfully, there are steps you can take to reduce gradual wear and tear on your system.

  • Keep your system clean. Keeping your ductwork, indoor evaporator coil, grills, and condenser fan blades clean helps your HVAC system function properly and lowers the risk of mold. The National Air Duct Cleaners Association recommends cleaning your home's HVAC system when you notice it starting to get dirty.
  • Monitor for potential problems. Monitoring your system for problems — for example, by checking your thermostat and energy bills routinely — helps you get ahead of problems before they get too expensive.
  • Change filters regularly. Replacing your air filters or washing them every 30–90 days allows effective air circulation through your HVAC system. You should also try to keep debris from accumulating on the external parts of your HVAC.
  • Change the position of your blinds seasonally. Keeping your blinds closed in the summer helps block out passive solar heat. Keeping them open in the winter helps you take advantage of this same heat. Both of these measures help reduce the amount of work your HVAC system needs to do.
ServiceCost
Filter Replacement$63-$167
Condensor Cleaning$1,254-$3,762
Thermostat Repair$84-$209
Ductwork Cleaning$401-$1,003

How To Choose a Local HVAC Company

Knowing the right things to look for in an HVAC company is key for a smooth repair or installation. Picking an established business with certified technicians gives you assurance your HVAC system will deliver consistent heating and cooling year-round.

Compare Multiple Bids

Request estimates from at least three HVAC contractors. Describe your issues and ask if technicians can inspect your system in person. Review each contractor's diagnoses, recommended solutions, estimated cost, warranties, and timelines. Avoid contractors that pressure you or demand payment before work.

Check Credentials

Choose an HVAC company with skilled technicians who have proper licensing and experience. In all states, HVAC contractors have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, an individual must pass an exam (the specific exam depends on the kind of equipment they intend to work with). Section 608 certification is required for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." All other licensing requirements are handled by the state.

HVAC contractors in Texas are required to be licensed by the Texas Department of Licensing and Regulation. Contractors need to have at least four years of experience in the past six years and must show proof of insurance. An individual can also be a registered technician, which has no experience requirements, or a certified technician, which requires two years of experience. Both registered and certified technicians must be supervised by a licensed contractor. You should also read reviews and complaints on sites like the Better Business Bureau (BBB), Google Reviews, and Yelp. Choose a company with positive reviews and testimonials about great customer experiences.

Understand Work Details

Always make sure you know the details of your project. When HVAC repairs are required, your provider should list which parts require replacement and why. Confirm that your technician will clean and test your system after repairs are finished to verify that it’s working properly. When replacing your HVAC system, ask the contractor to describe the new estimated installation time, features, brand, energy efficiency, and model. Before work starts, ask how your provider plans to accurately size the unit for your home and how much it will cost.

Compare Warranties

A trustworthy HVAC company will back its repair services and equipment installations with a warranty. The longer and more comprehensive the coverage terms, the better. Carefully compare the fine print between contractors and choose the provider that offers the greatest protection within your budget.

Get Quote in Writing

Get written quotes before starting HVAC work. The quote should cover costs for both materials and labor. Review all terms carefully before signing.

Frequently Asked Questions About HVAC in Denison, TX

You should have your HVAC system inspected twice annually. At the time of the inspection, your technician will tell you what services are required. You should also call a technician if you notice new issues such as unusual smells, strange noises, or leaks. If your home has ductwork, it should be inspected every few years.

Usually, it's smart to schedule inspections in the spring and fall, as technicians tend to be less busy at these times. This also helps make sure your system is prepared for the summer and winter, when it likely sees the most use.

You can save energy during the summer by reducing the amount of power your HVAC system uses to keep your home cool. Set your thermostat as close to the outside temperature as is comfortable, and try to avoid making drastic changes in temperature all at once. Keep your roof in good shape and seal any leaks around your doors and windows to avoid letting cool air escape. Similarly, make sure your attic is well ventilated to avoid trapping excess heat in your home.

It takes roughly one to three days to have your HVAC system installed or replaced. If you only need a furnace or a single air conditioning unit, this can take between half a day and two days. This timeline can be determined by the size of your house, the accessibility of your system, and any issues your technician discovers.

For a 2,000-square-foot home, you'll need between 2.5 and 5 tons of air conditioning capacity. In Denison, you'll probably want to explore units on the higher end of this range. If your home is larger than 1,000 square feet, central air is likely to be more effective than window units for cooling.

For a 2,000-square-foot home, you should also look for a furnace that is between 50,000 and 80,000 BTUs (British thermal units). In Denison, you might be able to make do with a lower-capacity furnace.

Normally, HVAC financing is through a third-party lender. If your HVAC company doesn't offer financing, you might consider taking out your own loan. Be sure to talk to your HVAC company and a financial advisor to learn what options are available to you and appropriate for your situation.

There are several ways you can make your HVAC system more energy-efficient:

  • Keep your air ducts clean and clean or change your air filters regularly.
  • Schedule regular inspections to take care of problems as they come up.
  • Keep your attic well-ventilated and make sure all doors and windows are well-sealed.
  • Install a smart thermostat. If you don't want to or can't buy one, try keeping the temperature indoors as close to the outside temperature as you can.
  • When it comes time to replace any part of your HVAC system, explore Energy Star-certified or other environmentally friendly options.

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