Heating Service in Reston

Providing Heating Repair and Replacement Services in Reston Since 1975

Winter in Reston can be harsh, making reliable and affordable home heating essential. For many, this involves replacing an old furnace or heater. Over time, heating systems wear out, especially without regular maintenance by HVAC professionals, and eventually need replacement. During the colder months, losing heat isn’t just uncomfortable—it can pose risks to your home and health. For furnace and heater repairs in Reston, don’t settle for any HVAC contractor. Call Dave’s Heating and Air Conditioning.

A Layman’s Explanation of How Furnaces Work

To maximize your heating system’s performance, it’s essential to understand how it operates. A furnace is the indoor HVAC unit that heats and circulates air throughout your home or business. It warms the air and distributes it until the thermostat signals the furnace to stop. Here’s how a typical heating cycle works:

Electricity, gas, propane, or heating oil enters your home from the utility network or fuel tank.
When the temperature drops, the thermostat signals the furnace to start heating.
The furnace ignites the gas in a heat exchanger, and exhaust gases are safely expelled through vents to prevent toxic exposure.
The blower draws air into the furnace through return ducts and pushes it over the hot heat exchanger.
The heat exchanger transfers heat from the fuel to the air moving across it.
The blower circulates the warm air until the thermostat’s target temperature is reached.
Once the desired temperature is met, the thermostat shuts off the gas valve and stops the airflow.

Fun Fact: The word furnace is derived from the Latin word fornax, meaning oven. Since propane and gas furnaces weren’t invented until the 1880s, this word predates them by a millennia!

Heating Services We Offer in the Reston Area

We’re proud to help people in Loudoun County stay warm during the coldest months. For most in Reston, this means relying on a dependable furnace or boiler. Here’s how Dave’s keeps your home comfortable.

Furnace Repair

When the heat goes out, we all hope it’s a simple fix—a loose wire, a blown fuse, or just a quick cleaning. Sometimes, it is. For any furnace repair, big or small, our Reston-area heating contractors are here to help. From replacing filters to complete furnace overhauls, we’re only a phone call away.

Furnace Replacement

Your furnace has likely exceeded its 15–20-year lifespan before the blower motor failed. Now, you face a choice: repair or replace it? If your furnace is over 10 years old, replacement is often the better option, offering improved technology and energy savings. We’re here to help as your trusted Herndon HVAC company. So, when you search for “furnace replacement near me”, you’ll know you’ve come to the right place.

Furnace Maintenance

The best way to prolong your furnace’s lifespan is with regular maintenance from an HVAC professional in the Reston area. Routine check-ups catch problems early and lower energy bills. Schedule maintenance for your furnace or AC to keep them efficient and avoid costly repairs, saving you money for what matters most.

Other Ways We Keep Loudoun County Warm

While furnaces are popular in Loudoun County, they’re not the only option. Our HVAC technicians can help you select the best heating system for your home and provide ongoing service to keep it running efficiently. For assistance with alternative heating solutions, call 571.346.3940.

Heat Pump Maintenance

Like all HVAC systems, heat pumps require regular maintenance for peak performance. That’s why we offer an affordable maintenance program. During a visit, our technician will ensure proper airflow, check for leaks, inspect for issues, and provide recommendations. To keep your heat pump in Reston running smoothly, schedule maintenance with Dave’s today.

Heat Pump Conversion

Looking to cut energy costs and help the planet? Consider upgrading your AC unit to a more efficient, eco-friendly heat pump. The switch is easy and could qualify you for substantial rebates. Learn more on the page below—we’re proud to offer heat pump conversions in the Reston area.

Heat Pump Repair

Heat pumps are efficient and popular HVAC systems, but constant use can lead to occasional breakdowns. If yours fails, our heat pump repair experts are ready to help.

Call 571.346.3940 to schedule heat pump service in the Reston area.

Heater Service

Not all Reston homes need a typical forced-air heating system. Some might function well with a simpler heating solution. However, our HVAC experts are equipped to handle any heating issue, whether you have a furnace or another type of heater. Just give us a call.

Reach out by form or phone to schedule service with Reston’s favorite heater service experts.

Heater Maintenance

All heaters require routine maintenance, no matter the type. This keeps them running properly and helps avoid early breakdowns. To learn more about our heater maintenance in Reston, call 571.346.3940.

Heater Replacement

Even the best heaters will eventually need replacement. Choosing the right unit requires a true HVAC professional. Luckily, Reston residents are within Dave’s service area.

Ductless Heating

Is your Reston or Herndon home without ductwork? Need an efficient way to cool a new addition? Contact Dave’s to learn about ductless mini-splits. These systems heat and cool efficiently, making them the ideal HVAC solution for many families.

What to Look for in a Heating Contractor

Your heating system is essential for home comfort, ensuring safety in winter and representing a significant investment. Choosing the right professional to repair and maintain your furnace , boiler, or heat pump is crucial. While Reston offers many HVAC companies, these six traits set reliable professionals apart from the rest:

1. Current Insurance and Licensing: In Virginia, contractors must meet specific training and skill requirements to obtain a license. A valid license is the clearest sign of a qualified HVAC contractor. Check the company’s website for a license number—ours is at the bottom of the site. If you can’t find it, call and ask. If they don’t provide one, choose another company.
2. Comprehensive Insurance: What happens if a technician damages your home or gets injured on your property? These situations highlight the importance of hiring a heating company with current insurance. Our team carries full insurance to give you peace of mind.
3. Glowing Reviews: Review a contractor’s online ratings and ask others for recommendations. If you know someone who has used their services, see if they’d recommend them for heating work in Reston. A few negative reviews aren’t a dealbreaker—what matters is how the company addressed them.
4. Experience and Expertise: Experience is critical for heating service in Herndon or Reston. Contractors with more years in the field can diagnose issues faster and are better prepared with the right tools and parts.
5. Warranties and Guarantees: Even new systems can fail, often due to improper installation. Choose a heating company with strong warranties and an excellent guarantee policy to ensure your satisfaction is protected.

1. Special Offers and Rebates: Look for deals that meet your heating needs. Save coupons or explore discounts on our special offers page to maximize savings.

As you might expect, we embody all six of the qualities mentioned above. Call us at 571.346.3940 to schedule heating service in Herndon or Sterling.

Call Dave's Heating and Air Conditioning for Professional Heating Service in Herndon and Reston

Dave’s Heating and Air Conditioning stands out among Reston’s heating contractors by prioritizing your satisfaction. We’re so confident in our work that we guarantee your satisfaction. From system performance to craftsmanship, we hold ourselves to the highest standards. If you’re ever disappointed, call us at 571.346.3940, and we’ll make it right.

The next time you need heating service in Reston or Sterling, trust Dave’s Heating and Air Conditioning. From furnace repair to heater installations, our Reston HVAC contractors have the expertise you need. Call 571.346.3940 to schedule your service and join our family of happy customers.

Frequently Asked Questions

Do I Really Need Furnace Maintenance in Reston?

We recommend having your heater or furnace inspected regularly. Many heating failures happen when this important task is overlooked. During the inspection, our HVAC expert will check for damage, clean dust, and test electrical components. Regular maintenance improves efficiency and meets warranty requirements, helping protect your system. Call us at 571.346.3940 to schedule your furnace tune-up in Reston.

How Often Should I Replace my Furnace Filter?

Regularly changing your air filter is essential for maintaining your heating system’s performance. For a standard 1-inch filter, replace it monthly. For 4-inch filters, manufacturers recommend replacing it every six to nine months. If you have shedding pets, check more often. The easiest way to tell if it’s time for a replacement is by its appearance—if it’s more gray than white, it’s time to swap it out.

With Brands of Furnaces and Heating Products does Dave's Heating and Air Conditioning Work On?

Our heating experts work with all brands of HVAC equipment including Coleman, Carrier, Bryant, Payne, Trane, Lennox, Rheem, Mitsubishi, Frigidaire, Gibson, Goodman, Maytag, Weil McLain, American Standard, General, and Dynamic.

What Do I Do if My Heat Goes Out?

Check if your furnace is getting power. Ensure the power switch is ON and verify if a fuse or circuit breaker is tripped.
When did you last change your filter? If it’s overdue, replace it. This simple fix can resolve many heating issues.
Make sure your thermostat is set to “heat” and not “cool”. If the display is dim, try replacing the batteries.
Is there snow or debris blocking your outdoor vent? Clear the obstruction to improve system performance.

If you still have no heat, contact Reston’s top furnace repair experts at 571.346.3940.

How Can I Reduce My Heating Bills?

The most obvious way to reduce heating bills in Reston is to install a new heating system, but there are other effective methods to lower your gas and electric bills as well:

Lower Your Thermostat: Turning your thermostat down by 10 degrees can reduce energy use by about a third. If that’s too chilly, each degree lower will save around three percent.
Seal Air Leaks: Heat often escapes through gaps in your home or ductwork. In older homes, this can account for 25 to 40 percent of heat loss. Sealing leaks keeps drafts out and reduces your energy costs.
Service Your Heating System: Annual tune-ups help keep your heating system running efficiently. Our Reston HVAC technicians clean and optimize your furnace or boiler, improving performance and lowering energy use.
Improve Insulation: Many homes have inadequate insulation. Adding or upgrading insulation is a cost-effective way to save on heating bills. Contact a local Reston insulation contractor to learn about potential savings.
Cover Your Windows: According to the Department of Energy, 30% of heat is lost through windows. While old windows should be replaced, even newer ones can leak warmth. Adding floor-length curtains can help retain the heat in your home.
Check the Vents: Ensure that vents are unobstructed and clean. Dusty vents can block airflow. Cleaning the vent plates allows heat to circulate more evenly throughout your home.

How Much Does a New Furnace Cost in Reston?

The cost of furnace installation depends on several factors, including the type of furnace, the amount of additional work required, and the size of the unit. If your home has two units, this could also increase the cost of furnace replacement in Reston.

Your Customer Service Representative Referenced a "No-Heat Call". What Is That?

A no-heat call refers to a situation where a customer has no heating power at all. This could be due to issues with their furnace, boiler, or heater. Since these situations can be particularly uncomfortable during Reston’s colder seasons, we prioritize these appointments in our schedule.

What Should I Do with My Heating System if I’m Going on a Long Trip?

It’s time for the vacation of a lifetime! Just you and the Outback for the next three weeks, free from the annoying VA winter. The last thing you want to worry about is your home’s heating system. While some people turn off their furnace or boiler before leaving, this is not the best approach. Letting your home get too cold can lead to burst pipes and damage to appliances, walls, and photos. To save on costs and protect your home, set your thermostat to around 55 degrees, or a bit warmer if you have pets. Just remember to switch your thermostat to ‘vacation’ or ‘hold’ before you head out the door.

Why Is One Room Cold and the Other Warm?

Is one of your bathrooms freezing while the other is too hot? Heat imbalances like this are usually caused by airflow issues, such as blocked vents, poor heating system design, or leaky ductwork. While you could try to fix it yourself, it’s often best to leave it to a professional Reston HVAC specialist. Call 571.346.3940 today and let Dave’s restore balance to your home.

What’s an AFUE Rating?

AFUE stands for Annual Fuel Utilization Efficiency. It measures how efficiently a water heater, furnace, or boiler converts fuel into heat. The higher the AFUE, the more efficient the system. This rating is calculated by dividing the unit’s annual energy output by its input. The government sets minimum AFUE standards for heating equipment, which are periodically reviewed and updated.

What’s an Efficiency Rating?

AFUE is just one example of an efficiency rating. Other common ratings include the Seasonal Energy Efficiency Ratio (SEER), Heating Seasonal Performance Factor (HSPF), and Energy Efficiency Ratio (EER). No matter the measurement, these ratings all serve the same purpose: to indicate how effectively a heating system heats a space and how much energy it consumes.

Should I Opt for an Electric or Gas Heating System?

The best fuel source for your home depends on several factors. Here’s a comparison of electric and gas heating systems across various characteristics:

Air Quality: Electric systems generally provide better air quality than gas systems.
Safety: Electric systems are safer as they don’t use flammable gases.
Speed: Gas heaters typically heat up more quickly than electric ones.
Extreme Weather: If the power goes out, electric furnaces won’t work, but gas units can still provide heat.
Lifespan: Electric furnaces tend to last slightly longer than gas furnaces.
Maintenance: Gas furnaces generally require more maintenance.
Cost: Electric heaters are cheaper to install but are more expensive to run.

Should I Turn Off Vents in Rooms I’m Not Heating?

Many homeowners believe closing vents saves energy, but it actually does the opposite. Closing vents can:

Cause pressure changes in your ductwork
Reduce heating system efficiency
Worsen existing air leaks
Encourage mold growth from misdirected warmth
Lead to heat exchanger damage

Instead of closing vents, try leaving doors open between rooms. If a room is too hot and your home isn’t zoned, you can slightly close the vent.

How Do I Tell What Kind of Heating System I Have?

The simplest way to tell the difference is by how the heat is delivered. If you have radiators and water pipes, your home uses a boiler. If you have ducts or vents, you’re likely using a furnace or heat pump. To distinguish between the two, count the equipment: one piece outside means it’s a heat pump, while two pieces indicate a traditional furnace. If you’re still unsure, our Reston HVAC technician can clarify during your heating system tune-up.

Is It Bad to Run My Heating System at High Temperatures?

Even if you’re used to high heat, setting your furnace too high isn’t a good idea. Most modern furnaces can’t be set above 90 degrees as a safety feature to prevent long cycles and overheating, which can damage vital parts like the heat exchanger. Additionally, your system likely has a high-limit switch that will turn off the furnace if it gets too hot. Most Reston HVAC experts suggest setting your thermostat no higher than 78 degrees for optimal performance.

What’s Two-Stage Heating?

Single-stage heating systems, commonly found in older or budget-friendly models, have just one heating output level. While you can adjust the thermostat, it doesn’t change how hard the furnace works. In contrast, modern two-stage furnaces offer both high and low output settings. The high setting is used on the coldest days, while the low setting operates during milder weather. This helps save energy and ensures more even heat distribution. Because of their adaptability, these systems are also known as modulating furnaces.

Why Does My Home Get Dry When My Heating System Runs?

Hot air can hold more moisture than cold air, so as it circulates through your home, heated air can draw moisture from the environment. Additionally, the combustion process can reduce your home’s relative humidity. Winter itself tends to bring dry air. To improve comfort, consider installing a whole-house humidifier in Reston. These systems can be seamlessly integrated with your furnace or heater.

What Parts Are There in a Heating System?

Here’s a breakdown of the key components in most heating systems:

Blower: This part pushes warm air through your home. If it fails, the furnace may be running, but the vents won’t be blowing air.
Blower Motor: The motor powers the blower fan, ensuring air moves throughout the home. Without it, air won’t travel beyond the furnace.
Blower Chamber: This housing stabilizes the motor and blower fan, preventing vibrations and damage from forceful movement.
Combustion Chamber: Houses the furnace’s ignition system and keeps it separated from the blower chamber for safety.
Heat Exchanger: A critical component that transfers heat from the combustion gases to the air circulating through your home. The gases are then safely vented out through the flue.
Burner: Creates the flame that starts the heating process, fueled by gas or an electric spark.
Burner Cover: This metal cover shields key components like the flame sensor and ignitor, ensuring the flames stay contained inside the furnace.
Flame Sensor: Detects if the burner is ignited. If a problem arises, it shuts off the furnace to prevent carbon monoxide leaks.
Ignition System: Older furnaces use pilot lights that stay lit, while newer models have electronic ignitors, which are more reliable and resistant to being blown out.
Limit Switch: A safety sensor that monitors furnace temperature. If the furnace gets too hot, it automatically shuts off to prevent overheating. It’s often located under the supply plenum and may be called a fan limit or furnace high limit switch.