Best Heat Pump Replacement Companies in Gaithersburg, MD
Heat Pump Replacement in Gaithersburg: sizing + authorization
A replacement or conversion is bid on Manual J load calculation, manufacturer authorization, and matched-system commissioning — oversizing is the #1 cause of comfort complaints. Here is what each of the 3 contractors below publishes: Verify your state's HVAC contractor license through the state licensing board before paying a deposit.
Top picks
Consistently strong customer feedback (4.9★ from 7,725+ Google reviews).
Google 4.9★ (7,725+)
Consistently strong customer feedback (4.8★ from 690+ Google reviews).
Google 4.8★ (690+)
Consistently strong customer feedback (4.9★ from 395+ Google reviews).
Google 4.9★ (395+)
Typical Heat Pump Replacement costs in Gaithersburg, MD (2026)
Last updated
Estimated ranges for Gaithersburg, MD. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Ducted air-source heat pump + air handler, full system (installed) | $8,550–$17,100 |
| Air handler replacement (paired with heat pump) | $1,600–$3,750 |
| Ductwork modification (resize / re-balance per Manual D) | $640–$2,350 |
Why Gaithersburg homeowners choose Heat Pump Installation now
Cool, humid summers and frigid winter nights make efficient home heating and cooling a priority in Gaithersburg, MD. Choosing a qualified installer cuts electric bills and modernizes aging furnaces. Compare estimates from the best heat pump installation companies in gaithersburg maryland to verify warranties and emergency service availability.
What Gaithersburg residents ask most about Heat Pump Installation
- Can I replace my gas furnace with a heat pump?
- Yes — a heat pump both heats and cools, so it can fully replace a gas furnace. In colder areas a dual-fuel setup keeps the furnace as backup for the coldest days. Either way, insist on a Manual J load calculation; conversions can need duct resizing or an electrical upgrade.
- When is replacing an old heat pump better than repairing it?
- If it's past 12–15 years, still uses phased-out R-410A refrigerant, needs a compressor, or the repair bill approaches a third of replacement cost, replacing usually wins. A reputable contractor compares both paths before recommending.
- Do contractors handle permit filings for heat pump replacements in Gaithersburg?
- Many contractors file required permits, but homeowners should confirm this before hiring. Request written confirmation that the installer will obtain permits and schedule inspections. Permit processing can affect start dates, so include permit responsibility and any associated fee estimates in the contract. The installer should also provide inspection receipts when work is complete.
- Can a contractor replace an existing gas furnace with a heat pump in Gaithersburg?
- Yes, many contractors perform furnace-to-heat-pump conversions, subject to permit and fuel‑line disconnect rules. Confirm the installer will assess ductwork, electrical service, and any gas decommissioning requirements. The contractor should outline necessary electrical upgrades, thermostat replacements, and tie-ins to existing vents or recommend duct modifications if needed.
- How does permit processing affect installation scheduling in Gaithersburg?
- Permit turnaround can delay start dates, so plan accordingly. Contractors who handle filings may need extra days for permit approval and county inspections. Ask the installer for an estimated permit timeline and include permit-related contingencies in the work schedule. Early permit submission usually reduces unexpected schedule slips.
- How do I get a quote from these heat pump installation companies?
- Submit one request on this page and we send it to the vetted heat pump installation pros in Gaithersburg, MD listed here. They send quotes back — no obligation.