"You’ll be comfortable with us!"
We’re a locally-owned family business dedicated to providing expert heating and air conditioning solutions to our customers for 50 years and counting.
"You’ll be comfortable with us!"
We’re a locally-owned family business dedicated to providing expert heating and air conditioning solutions to our customers for 50 years and counting.
Request Service - It Only Takes 7 Seconds!
proverbs 22:1
“a good name is more desirable than great riches; to be esteemed is better than silver or gold.”
Dave’s is the #1 Choice for AC and Heating Repair or Replacement in Loudoun County
When you’re looking for heating, air conditioning, and water heater service in Loudoun County, you can count on us.
Our HVAC techs are highly skilled and experienced professionals who treat your home like their own. Our technicians have over 100 years of combined experience! We devote a lot of time to ensuring every team member represents our Core Values. “You’ll be comfortable with us”, that is our guarantee to you.
We’ve proudly served the Reston and Sterling area since 1975. This means we’ve spent over 49 years keeping you comfortable!
Call or Text Dave’s today for expert service – 571.346.3940
Major Types of HVAC Equipment in Reston
There’s more than one way to heat and cool a home. Below is a quick break down of the equipment you might see in Virginia:
What Is It: This unit cools your home by removing heat and humidity from the indoor air. Known as a central air conditioning system, it operates with an outdoor unit and an indoor coil.
How Do I Know I Have One: Air conditioners use ductwork to distribute cool air throughout the home. The outdoor unit is usually found outside the house, while the indoor coil is placed in the duct system near the furnace.
What Is It: It’s large, in-charge, and responsible for heating your home. Typically referred to as a central heating system, this piece is set apart from boilers by its lack of a tank.
How Do I Know I Have One: These units rely on ductwork to move warm air around. They’re typically located in the center of the home.
What Is It: When it comes to flexibility, it’s hard to beat a heat pump. Able to alternate between heating and cooling, these units merge the functionality of an AC unit and furnace. They’re also ultra-efficient. These units can be ducted or ductless.
How Do I Know I Have One: You flip your thermostat to HEAT and the exterior unit turns on. You had to add an air handler.
Life Span (Years): 10-15
What Is It: In homes in Reston with central HVAC, the furnace’s blower motor is responsible for air distribution. For people with heat pumps or just air conditioners, an air handler is installed to take its place.
How Do I Know I Have One: You don’t have central heating but still have a large box in your home. It typically has a slot for your air filter.
Life Span (Years): 15-25
What Is It: Though sometimes able to alternate between heating and cooling, not all mini-splits are heat pumps. They’re a go-to choice for people who want to add air conditioning to a ductless home. They’re also an ideal option for additions and garages.
How Do I Know I Have One: These units feature wall mounted units called cassettes. You also lack ductwork.
Life Span (Years): 20-25
AIR CONDITIONING
AIR CONDITIONING
Heating
Heating
AIR QUALITY
AIR QUALITY
WATER HEATERS
WATER HEATERS








“Why Choose Dave’s”
Trusted Advisors for Over 50 years!
We have serviced all brands over the years and are uniquely qualified to help you with your Reston furnace and heat pump repairs. Rest assured, whether the issue is heating or cooling, that we’ll help you find the right solution to your problem.
Expert Residential Service and Installation
When you use us for heat pump or heater replacement in Reston, you’ll love how we do things. We focus foremost on your needs and selecting a system that meets your performance and pricing requirements. Call 571.346.3940 for a furnace or AC installation that fits your home like a glove.
Professional and Fair
Simply stated- we take care of our customers. Those core values of ours? They’re not just empty promises. They’re what we live and service by. We have been treating our customers in the Reston professionally and fairly for over 50 years. At Dave’s Heating and Air Conditioning, that’s what we do.
Dave's Reviews
EXCELLENT Based on 146 reviews Posted on Sarah SteinTrustindex verifies that the original source of the review is Google. We just had Dave’s come out to our house today. We thought we might have a serious issue with our heating and air system. The two technicians cleaned and serviced the unit and let us know that our unit was fine. We went from thinking we had an expensive problem to only having to pay a very reasonable service fee. They were professional and wonderful to work with. We will be using the company in the future and will recommend them to others.Posted on Eric MoyTrustindex verifies that the original source of the review is Google. I scheduled online for an AC diagnostic which was seamless. Adam came out in that time frame and gave me the run down of the issues. He was very knowledgeable and I would've went with him to fix the compressor issues. Unfortunately, whoever this companies receptionist is sounds like she hates her life over the phone. It took them a week to get back to me with a quote. She calls me, asks if I want to get it fixed and immediately asks for my credit card info. I don't have an estimate of what's being repairs or materials they need. I tell her please send it over and I'll pay the down payment through the portal since I was driving to work. A day goes by and crickets, I get another call asking about payment. She says she sent the email but the only thing I received was a schedule confirmation. Finally it arrives and everything is still lumped into one price. It wasn't that big of a deal, but I decided to get a second quote and this other place turned an itemize quote around in an hour, came out the next day, didn't ask for a deposit, and got the job done. If you all get that much business, the sentiment is your customers are just a number, and you can't be bothered to give the bare minimum customer experience then so be it.Posted on Jan and Joe AdamsTrustindex verifies that the original source of the review is Google. Great job. Dave’s assisted with design as this was a replacement of a chiller system. Very pleased. Adam and team doing the installation we awesome.Posted on David LoughranTrustindex verifies that the original source of the review is Google. Good experience from start to finish. Notification of appointments and arrivals. All members of the team were professional and polite. This was for a whole house steam humidifier.Posted on Cheryl WackerTrustindex verifies that the original source of the review is Google. I needed a new AC system due to RELAC out of business. Todd was my first contact. He explained my options, answered all my questions...even after he left and I continued to contact him. He was very patient with all my concerns. On the install day, Adam and his team arrived on time, and communicated with me during the entire process. They explained thoroughly what they were doing and why. They did not leave until all had been checked out, and they cleaned up thoroughly. I will recommend them to anyone needing a new AC system.Posted on nora bTrustindex verifies that the original source of the review is Google. I’ve been a Dave’s customer for over 20 years. Great people, great service.Posted on Stuart LoganTrustindex verifies that the original source of the review is Google. Exceptional service. Furnace delivered and installed professionally. Very nice to work with family-owned business that understands customer care!Posted on Norm MelnickTrustindex verifies that the original source of the review is Google. The two techs (Adam and Stan) did an outstanding job. They were on time, professional, and thorough in analyzing the issue and then remedying the situation.Posted on Robert BeckerTrustindex verifies that the original source of the review is Google. I have been using Dave’s heating and air conditioning for many years. Their service has been impeccable. They always arrive on time and the quality of their workmanship is first class!
