HVAC Questions, Answered

Most HVAC repairs in Washington, DC run between roughly $150 and $500, with simple fixes like a capacitor or fan motor on the lower end and major component work going higher. Expect a diagnostic or service-call fee of about $75 to $200, plus labor of roughly $75 to $150 per hour. Rates in the District tend to run higher than the national average, so always get an itemized, upfront quote before authorizing work.

Yes. We offer 24/7 emergency service for situations like a complete AC failure during a heat wave or no heat in winter, including nights, weekends, and holidays. A true emergency is generally a no-heat, no-cool, gas-smell, or active water-leak situation that can’t safely wait until normal business hours. Call us any time and we’ll dispatch a technician fast.

Treat it as an emergency if you have no heat in freezing weather, no cooling during dangerous heat, a gas or burning smell, sparking, or water actively leaking near electrical components. These pose safety or health risks, especially for infants, elderly residents, or anyone with medical conditions. Issues like a slightly noisy unit, weak airflow, or a higher energy bill are real problems but can usually wait for a scheduled appointment.

Most AC and furnace repairs are completed the same day, typically in one to four hours. Diagnosis usually takes 30 to 60 minutes, simple repairs like a capacitor or fan motor run one to two hours, and more complex jobs can take three to four hours. The main thing that stretches a repair into multiple days is when a special-order part is needed for an older or less common system.

The most common causes are a clogged air filter, an incorrect thermostat setting (such as the fan set to ON instead of AUTO), or a dirty outdoor condenser coil blocked by leaves and debris. You can safely check the filter, confirm the thermostat is on COOL, and gently rinse debris off the outdoor unit. If those don’t fix it, the problem is likely a refrigerant leak, frozen evaporator coil, or failing compressor, which require a licensed technician.

Check the simple things first: make sure the thermostat is set to HEAT and the fan to AUTO, and replace the air filter if it’s dirty, since a clogged filter can trip the high-limit switch and shut off the burners. Other common culprits include a failed igniter, a dirty flame sensor, or pilot/ignition problems. Anything involving the gas valve, flame sensor, or ignition should be handled by a professional for safety.

A common guideline is the $5,000 rule: multiply your system’s age by the repair cost, and if the result exceeds $5,000, replacement usually makes more sense. As a rule of thumb, replace if your AC is over 10 years old or your furnace is over 15 years old, if repairs approach 50% of replacement cost, or if there’s a safety issue like a cracked heat exchanger. Newer systems with occasional minor repairs are almost always worth keeping.

A new HVAC system in the Washington, DC area typically costs between about $5,000 and $12,500 installed, with full furnace-and-AC combinations often landing in the $11,000 to $14,000 range. Final pricing depends on system size, efficiency rating, fuel type, and any ductwork or electrical upgrades. DC homeowners switching from gas to an electric heat pump may offset a large portion of that cost through DCSEU rebates.

Ideally twice a year: a tune-up in spring for the air conditioner and one in fall for the furnace, so each system is ready before heavy use. If twice a year isn’t feasible, at least once annually is strongly recommended. Between professional visits, check and replace your air filter every one to three months, more often if you have pets or run the system hard during DC’s hot, humid summers.

Yes. The District requires HVAC work to be performed by licensed professionals, and major work must be overseen by a Master Refrigeration and Air Conditioning Mechanic. Always verify a contractor’s DC license before hiring, since unlicensed work can void warranties, fail inspection, and create safety and insurance problems. Licensed contractors are also the only ones authorized to pull permits and pass District inspections.

Routine repairs generally don’t require a permit, but a mechanical permit from the DC Department of Buildings is typically required to install or replace a heating or cooling system, even like-for-like, when it ties into the building’s ductwork, gas, or electrical. In the District, a DC master-licensed contractor must pull the trade permit; homeowners cannot pull it themselves for this work. We handle the permitting for you.

As of January 1, 2025, new HVAC systems must use lower-global-warming refrigerants such as R-454B, and the older R-410A is being phased out of production. R-410A is still legal to use in existing systems, but its price is rising as supply shrinks. Systems built for R-410A cannot be converted to R-454B, so if your older unit has repeated refrigerant leaks, replacing it may be more cost-effective than repeated recharges.

Refrigerant doesn’t get used up; if your system is low, it has a leak that should be found and fixed rather than just topped off. A single recharge plus leak repair can be reasonable on a newer unit, but repeated recharges on a 10-to-15-year-old R-410A system are a sign it’s nearing the end of its life. Because R-410A costs keep rising, homeowners with leaky older units often come out ahead replacing the system.

Most central heating and cooling systems with low-voltage wiring are compatible with smart thermostats like Nest and ecobee. Installation is easiest if your system has a C (common) wire, though kits can work around a missing C-wire, which is common in DC’s older homes. Multi-stage or dual-fuel heat pump systems may need a higher-tier model, so it’s best to have a pro confirm compatibility and wire it correctly.

Start with your HVAC filter: use a quality pleated filter (MERV 11 to 13 captures pollen and fine particles) and change it every one to three months. In DC’s humid summers, keeping indoor humidity between 30% and 50% with your AC or a dehumidifier helps prevent mold and dust mites. Whole-house filtration, UV lights, and professional duct cleaning can further reduce allergens, which matters in DC’s many older, less-ventilated homes.

Many DC-area HVAC companies offer financing or payment plans, often with promotional periods, with approval based on a credit check. DC residents replacing equipment should also stack DCSEU rebates and any federal energy tax credits to cut the out-of-pocket cost before financing the balance. Ask us about current options when you call.

Yes. Through the DC Sustainable Energy Utility (DCSEU), residents can get rebates ranging from about $250 to $5,000 on qualifying electric heat pumps, AC units, and heat pump water heaters, with total incentives up to roughly $7,200 when switching from gas to electric. Equipment must be installed by a DC-licensed contractor, and applications must be submitted within 30 days of installation. We can help you choose qualifying equipment.

Before summer, clear leaves and debris from the outdoor condenser, change the filter, and schedule an AC tune-up so refrigerant and airflow are checked before the heat hits. Before winter, replace the filter, run the heat early to catch problems before a cold snap, and have the furnace inspected. Schedule seasonal maintenance two to four weeks ahead of the season change, since DC’s spring and fall are the least busy times to book.

Yes, a few safe checks often solve the problem: confirm the thermostat is on the right mode with working batteries, replace a dirty air filter, make sure the unit’s breaker hasn’t tripped, and clear debris around the outdoor unit. Also check that supply and return vents aren’t blocked by furniture or rugs. If those don’t restore heating or cooling, or you smell gas or see ice, water, or electrical issues, stop and call a licensed pro.

With regular maintenance, central AC units typically last 10 to 15 years and furnaces 15 to 20 years, and well-maintained systems can run even longer. The biggest lifespan killers are skipped maintenance, dirty filters that strain the system, an improperly sized unit, and deferred repairs. In DC’s demanding climate, an annual or twice-yearly tune-up is the single most effective way to protect your investment.

Our technicians repair and install all major heating and cooling brands, including Carrier, Trane, Lennox, Rheem, Goodman, Daikin, Bosch, Mitsubishi, and more. Whatever system you have, we carry common parts on our trucks to fix most problems on the first visit. If you’re considering a replacement, we’ll help you choose the right system and efficiency level for your home and budget.