Frequently Asked Questions

Almost always, but the panel matters. Fully electric systems with resistance backup can need a dedicated 60-amp circuit, tight on original 100-amp service. We assess the electrical picture during the estimate so there are no surprises.

Staggered half-levels stratify: warm air stacks up top while the lower level stays cool. Zoning dampers, a return-air fix, or a single ductless head in the worst level are the proven fixes here.

If your furnace is near end of life, often yes: Pepco pays up to $15,000 or 75% of project cost for qualifying combustion-to-heat-pump conversions, verified July 2026. We run the numbers both ways so you can decide.

We quote both honestly. Aspen Hill systems installed in the 2000s often use phased-out R-22 refrigerant, which makes major repairs poor value; newer R-410A systems are usually worth fixing.

Yes, on both sides of Connecticut Avenue and Georgia Avenue, whether your mailing address says Rockville, Silver Spring, or Wheaton. Our shop is a short drive away in Silver Spring 20905.

Usually the better answer is ductless: no duct installation, no plaster demolition, and each room is controlled independently. Where a partial duct system exists, we evaluate whether it can be extended before recommending equipment.

Not automatically. Radiator heat is quiet and even, and worth keeping when the boiler is sound. We give you both numbers, repair versus replacement, and if you do electrify, switching a combustion boiler to a qualifying heat pump can unlock Pepco's larger electrification rebate.

Half-story construction puts bedrooms directly under the roof deck with minimal insulation and weak airflow from a basement system. A dedicated ductless zone upstairs is the standard fix, and it heats those rooms in winter too.

Yes. Four Corners is unincorporated Silver Spring, so mechanical permits go through Montgomery County DPS. As the licensed contractor, we pull the permit and meet the inspector.

It does here. Most of Montgomery County receives Potomac plant water at 120 to 130 mg/L hardness per WSSC. Scale builds on heat exchangers, so we install isolation valves and recommend periodic descaling flushes.

Maybe not. In 1950s Kemp Mill Estates homes the duct trunk is usually the bottleneck, not the equipment. We measure static pressure first; sometimes a duct repair or added return fixes it for a fraction of a replacement.

Yes. Several thermostat lines support scheduled holiday or Sabbath modes that avoid direct interaction. Pepco also pays a $100 rebate per professionally installed ENERGY STAR smart thermostat, up to three per home.

We do. Condo replacements have building-specific rules for equipment location, drain routing, and work hours. We coordinate with management, protect common areas, and leave the mechanical room cleaner than we found it.

Often yes, especially paired with the existing furnace as backup. If you fully switch a combustion furnace or boiler to a qualifying heat pump, Pepco's electrification rebate cap rises to $15,000 or 75% of project cost, verified July 2026.

Annually at minimum, ideally each spring. Coil cleaning matters more in Kemp Mill than in open subdivisions because canopy debris insulates the coil, raising head pressure and power draw all summer.

Exterior equipment changes inside town limits require a Town of Kensington building permit alongside county requirements, and historic district properties add preservation review. We confirm exactly what your address needs and file it all.

Multi-zone ductless is usually the winner: small wall penetrations, no plaster demolition, room-by-room control. Where a dry basement exists, a compact up-flow ducted system serving the first floor plus ductless heads upstairs also works well.

If that elevation is not primary street frontage and the unit can be screened, often yes. Historic review focuses on visibility from the public right-of-way, so rear placements with lattice or plantings are the safest design.

Frequently, yes. A maintained boiler delivers excellent comfort, and Washington Gas pays $475 to $775 on qualifying high-efficiency boiler replacements when the time does come, verified July 2026.

Typically one to three days with minimal mess: each indoor head needs one small exterior penetration, and we route linesets through closets and chases. We protect floors and finishes throughout.

Yes. We prepare the specs and insurance certificates your mutual or condominium association requires, coordinate gate access, and schedule within permitted working hours. You will not be left chasing paperwork.

Usually, and often with a much more efficient unit in the same footprint. We measure the closet or wall sleeve first and quote equipment that actually fits, rather than proposing a renovation.

Heating outages for seniors are a priority dispatch for us, and we offer 24/7 emergency service. Common Leisure World configurations mean the likely parts are often already on the truck.

Pepco's EmPOWER Maryland programs pay substantial rebates on qualifying heat pumps, verified July 2026. Eligibility in co-ops and condos depends on metering and association rules, so we confirm before you sign anything.

Absolutely. We program it, label it, and walk you through it until you are comfortable. If you prefer a simple non-touchscreen model over a smart thermostat, we will install that instead.

Exterior work visible from the street generally needs a Historic Area Work Permit reviewed by the county's Historic Preservation Commission, and the city requires its own sign-off before county permits. We plan placements that pass review and handle the paperwork.

Yes. Multi-zone ductless systems need only a small penetration per indoor head, and we route linesets through closets and chases rather than across the facade. High-velocity small-duct systems are another option for whole-home cooling.

Usually not. Radiator heat is quiet, even, and suits these houses. We keep the boiler healthy and add ductless cooling, and only recommend electrifying the heat when the boiler is genuinely at end of life and the rebate math works.

Rear yards and non-primary side elevations, ideally screened by fencing or plantings. Street-facing placements are the classic reason projects get denied, so we design around that from day one.

Pepco's EmPOWER program pays up to $15,000 or 75% of project cost when a combustion boiler is switched to a qualifying electric heat pump, verified July 2026. We confirm eligibility for your specific house before quoting.

Those second floors were sold unfinished in 1948 and finished later, usually with one starved duct run. A ductless head upstairs or a correctly sized duct extension fixes what the original system was never designed to do.

Very possibly. 1940s and 50s trunk lines were sized for smaller furnaces and no cooling. We measure static pressure during diagnosis; sometimes the highest-value fix is duct repair, not another equipment swap.

Twinbrook is inside Rockville city limits, so most mechanical permits and inspections go through the City of Rockville. We verify the correct jurisdiction for your specific address and pull the permit as your licensed contractor.

If the furnace is near end of life, the math is worth running: Pepco pays up to $15,000 or 75% of project cost for qualifying combustion-to-heat-pump switches, verified July 2026. Staying with gas? A 97% AFUE furnace earns $700 from Washington Gas.

Yes, the original Twinbrook section to the south and Twinbrook Forest to the north, plus the surrounding Rockville neighborhoods. Our shop in Silver Spring puts us minutes away via Veirs Mill or the ICC.