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Last Updated: February 25, 2025
If you're like the average American, over half of your energy bill (55%, per the U.S. Department of Energy) goes toward heating and cooling your home. Since cooling and heating represent such a significant chunk of your utility bills, you'll want to make sure the HVAC system in your Lawrenceville home is functioning properly.
The right HVAC contractor can get your system into shape for a reasonable price, letting you keep your home comfortable while still saving money. That's why we've put together this guide to the top HVAC companies in Lawrenceville.

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User Rating
Informative resources
Clear pricing policy
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Prompt service delivery
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Our Rating
User Rating
Informative resources
Clear pricing policy
Reliable customer support
Free quotes
Prompt service delivery
Services Offered

Our Rating
User Rating
Clear pricing policy
Reliable customer support
Informative resources
Services Offered

Our Rating
User Rating
Free quotes
Prompt service delivery
Reliable customer support
Clear pricing policy
Informative resources
Services Offered

Our Rating
User Rating
Reliable customer support
Free quote
Clear pricing policy
Prompt service delivery
Informative resources
Services Offered

Our Rating
User Rating
Clear pricing policy
Reliable customer support
Informative resources
Free quotes
Prompt service delivery
Services Offered

Our Rating
User Rating
Reliable customer support
Clear pricing policy
Informative resources
Services Offered

Our Rating
User Rating
Prompt service delivery
Clear pricing policy
Free quote
Reliable customer support
Informative resources
Services Offered

Our Rating
User Rating
Informative resources
Reliable customer support
Free quotes
Clear pricing policy
Prompt service delivery
Services Offered

Our Rating
User Rating
Reliable customer support
Clear pricing policy
Services Offered
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:
If your HVAC system is having issues or getting near the end of its lifespan, it likely needs repairs or replacement from an HVAC company. Look for these signs your system needs service:
Arrange an inspection if you notice any of these issues. A local technician can evaluate your system, detect problems, and determine whether you need repairs or a new HVAC unit.
Your HVAC installation or maintenance cost varies depending on the type of unit. Common HVAC unit types include the following:
The amount you spend on HVAC maintenance also depends on what kind of work you're having done. HVAC systems are complex and might require different kinds of maintenance. The prices of some common jobs are as follows:
| HVAC Unit Type | Cost | |
|---|---|---|
| Split | $1,913-$4,876 | |
| Hybrid Split | $3,876-$7,140 | |
| Heat Pump | $3,001-$30,579 | |
| Packaged Heating and Air | $251-$419 |
HVAC upkeep is important, but can be expensive. Fortunately, there are steps homeowners can take to reduce wear and tear on their system and lower future maintenance needs.
| Service | Cost | |
|---|---|---|
| Filter Replacement | $63-$167 | |
| Condensor Cleaning | $1,256-$3,767 | |
| Thermostat Repair | $84-$209 | |
| Ductwork Cleaning | $402-$1,004 |
Knowing what makes a trustworthy HVAC company is key for an easy installation or repair. Hiring an experienced, credentialed HVAC contractor gives you confidence your system can provide consistent heating and air conditioning year-round.
Request estimates from at least three HVAC companies. Explain your issues and ask if technicians can inspect your system in person. Review each contractor's diagnoses, recommended solutions, estimated cost, timelines, and warranties. Avoid contractors that pressure you or demand payment before work.
When picking an HVAC company, choose one with technicians that have the proper training, licenses, and experience. HVAC contractors in all states need to obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is required for all contractors who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." Contractors must pass an exam (the type of exam depends on what kind of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled at the state level.
In Georgia, all HVAC contractors are required to be licensed. They can have either a Class I or Class II license. Class I licenses require four years of experience and limit the type of equipment a contractor can work on. A Class II license requires five years of experience and is unrestricted. Licenses can be verified on the Secretary of State's website. Also look at a company's reviews and complaints on sites such as Google Reviews, Yelp, and the Better Business Bureau (BBB). Pick a company with glowing feedback and good customer testimonials.
Make sure you know the details of your project before it begins. If HVAC repairs are required, have your provider specify which parts require replacement and why. Get confirmation that your technician will clean and test your system after the repair to ensure that everything works. For replacement, ask the contractor to explain the new HVAC system features, model, estimated installation time, energy efficiency, and brand. Before work begins, you should understand the process your provider will use to properly size the system for your home and the price you'll pay.
Reliable HVAC companies offer warranties on repairs and equipment installations. The more complete the coverage, the better. Compare warranty details between providers and pick the one that offers the best protection for a fair price.
Get written estimates before beginning any HVAC work. The quote should cover costs for both labor and materials. Read all terms carefully before signing.
You should have your HVAC system inspected approximately twice yearly. After the inspection, your technician will inform you what services are needed. You should also have your system inspected if you start noticing issues such as unusual smells, leaks, or strange noises. If your home has ductwork, you should have it inspected every few years.
Normally, you should have your HVAC system inspected 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 typically sees the most use.
You can save energy during the summer by making it easier for your HVAC system to keep your home cool. Keep your thermostat temperature 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 door or window leaks to help keep cool air in. Similarly, make sure your attic is well ventilated to avoid trapping excess heat in your home.
Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing a furnace or air conditioning unit can take as little as half a day or as much as two days. The exact amount of time will depend on factors like the size of your house, how easily accessible different sections are, and whether your technician finds any problems.
For a 2,000-square-foot home, you need around 2.5 to 5 tons of air conditioning capacity. In Lawrenceville, you'll probably want to explore units on the higher end of this range. For a house over 1,000 square feet, central air will usually be more effective than window units for cooling.
For a 2,000-square-foot home, you'll also look for a furnace that is between 50,000 and 80,000 BTUs (British thermal units). In Lawrenceville, you might be able to make do with a lower-capacity furnace.
There are several ways you can make your HVAC system more energy-efficient:
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