HVAC Repair and Replacement in Silver Spring, MD

Talk to Shemtov Systems

Shemtov Systems works out of 604 Ridgewell Way in Silver Spring 20902, so Silver Spring is home ground, not a service area at the edge of the map. We repair and replace air conditioners, furnaces, heat pumps and ductless systems across 20901, 20902 and 20910, from the 1920s blocks near downtown to the postwar subdivisions around Four Corners and Kemp Mill. A 24-hour answering service takes calls at 240-355-3333.

Key takeaways

  • About 62 percent of Silver Spring's 35,774 housing units were built before 1970, so tired ductwork and undersized returns are common findings.
  • Roughly 54 percent of occupied homes here heat with utility gas and about 42 percent with electricity, so furnace and heat pump work stay equally busy.
  • ENERGY STAR lists Montgomery County design temperatures of 92 degrees F for cooling and 14 degrees F for heating, the inputs a Manual J load calculation needs.
  • Montgomery County DPS issues the mechanical permit and wants the Manual J with it; Silver Spring is unincorporated, so there is no town permit office.

How quickly can Shemtov Systems reach a Silver Spring home?

Our shop is at 604 Ridgewell Way in 20902, which puts Four Corners, Woodmoor, Woodside Park, Indian Spring, Long Branch, Lyttonsville and downtown 20910 inside a short local run. That matters most on the days when everyone calls at once: the first 90 degree stretch in July and the first hard freeze. A 24-hour answering service picks up at 240-355-3333, so an overnight no-heat call reaches a person.

What does Silver Spring's housing stock mean for AC repair?

Census counts 35,774 housing units in the Silver Spring CDP, about 62 percent built before 1970: 4,016 in 1939 or earlier, 4,757 in the 1940s, 5,804 in the 1950s and 7,511 in the 1960s. Expect original or first-replacement ducts in vented crawl spaces and unconditioned attics, one undersized return in many Cape Cods and ramblers, and supply runs sized for smaller equipment than what replaced it. Airflow, not refrigerant, is often the fault, and topping off a leak is not a repair, so a leak search plus duct sealing and pressure testing come first.

How should an air conditioner be sized for Silver Spring?

ENERGY STAR lists Montgomery County at a 1 percent cooling design temperature of 92 degrees F and a 99 percent heating value of 14 degrees F; NOAA's 1991 to 2020 normals for Reagan National put July's average high at 89.6 degrees F. Those are Manual J inputs, not a square-footage rule of thumb, and the county agrees: DPS will not process a mechanical application that adds ductwork without an ACCA Manual J, eighth edition. An oversized system short cycles and never runs long enough to pull moisture out of humid Maryland air. See how to size an air conditioner correctly.

What actually heats most Silver Spring homes?

Of 33,988 occupied units in the Silver Spring CDP, about 54 percent burn utility gas, 42 percent heat with electricity and just 243 run on fuel oil or kerosene. Washington Gas is the gas utility here and Pepco the electric one. Gas furnaces dominate the postwar single-family neighborhoods, where heat exchanger condition, venting and combustion air drive the diagnosis. The electric share sits mostly in downtown apartments and condominiums. Those few oil systems are the strongest conversion candidates. We handle gas furnace repair and replacement across all three ZIP codes.

Does a heat pump make sense in Silver Spring?

Silver Spring sits in IECC climate zone 4A, and the county's 14 degree F heating design temperature is within reach of current variable-speed and cold-climate heat pumps. Capacity still falls as it gets colder, so sizing and backup heat get planned rather than assumed. In a house on electric resistance heat, a right-sized heat pump installation cuts heating energy substantially. Where a sound gas furnace is already in place, dual fuel lets the heat pump carry most of the winter and the furnace take the coldest mornings.

Which Silver Spring homes are better off with ductless?

Two groups. The prewar houses near downtown and in East Silver Spring, part of the 4,016 units the census dates to 1939 or earlier: Woodside Park, subdivided from the Noyes family's Alton Farm after 1922, is full of them, many built around radiators with no ductwork worth reusing. And the mid-century contemporaries, such as the twenty homes Joseph Miller designed in Rosemary Hills off East-West Highway in 1952, where long low rooflines and open plans leave nowhere sensible for a trunk line. Ductless mini-split systems add cooling without gutting the house.

How is HVAC different in downtown Silver Spring condos?

Downtown is genuinely high-rise: 14,065 of Silver Spring's 35,774 units, close to 39 percent, sit in buildings of 50 or more. Equipment there is usually a vertical stack fan coil, a packaged terminal unit or a water-source heat pump on a building loop, not a split system with its own condenser. The job carries management approval, an elevator reservation, corridor protection and a work window set by house rules. Houses get ordinary central air conditioning service; tell us the building when you call so we can arrange access.

Do I need a permit to replace HVAC equipment here?

Yes. Montgomery County's Department of Permitting Services requires a mechanical permit to install, alter, convert or replace an HVAC system, and one-for-one replacement applications can be issued immediately. Inspections split by fuel: a gas furnace must be inspected by both DPS and WSSC, while an all-electric heat pump needs only the DPS inspection. Relocating outdoor equipment adds a site plan showing zoning setbacks. Smaller work is exempt, including replacing a compressor or burner inside a unit. Silver Spring is unincorporated, so no city office sits on top of the county. We pull the permit.

What maintenance schedule fits Silver Spring homes?

Twice a year for anything running in both seasons, once at minimum. The canopy along Sligo Creek and the Northwest Branch stream valley is a pleasure until leaf litter packs an outdoor coil solid, and humid summers keep condensate pans and drain lines wet enough to grow biofilm. In houses with 1950s and 1960s ductwork, the visit is the moment to measure static pressure and check return sizing, not just swap a filter. A seasonal maintenance agreement bundles both visits.

Frequently asked questions

Which parts of Silver Spring does Shemtov Systems cover?

All of it: 20901, 20902 and downtown 20910, plus Kemp Mill. We also cover Wheaton, Bethesda, Rockville, Gaithersburg, Olney and Washington DC.

Do you answer after-hours HVAC calls in Silver Spring?

Yes. Shemtov Systems runs a 24-hour answering service, so a no-heat night in January or a dead compressor on a July Saturday reaches a person at 240-355-3333. We are family-owned since 1981, NATE-certified, and licensed and insured in Maryland and Washington DC.

Are there utility rebates for HVAC upgrades in Silver Spring?

Often, yes. Pepco and Washington Gas Light Company are both EmPOWER Maryland utilities, and their Maryland residential programs cover efficient equipment, HVAC tune-ups and home energy check-ups. Amounts and eligibility change, so we confirm what your equipment qualifies for when we quote.

What does HVAC replacement cost in Silver Spring?

It depends on equipment type, the capacity your load calculation calls for, and how much ductwork or electrical service must change. A 1950s rambler getting a furnace and coil swap is a different job from a condo stack unit or a ductless retrofit near downtown. Our guide to HVAC replacement costs in Maryland puts the ranges in context.

Talk to Shemtov Systems

Call Shemtov Systems at 240-355-3333 for AC repair, furnace and heat pump service, ductless installation or a full system replacement anywhere in Silver Spring. The shop is on Ridgewell Way in 20902, and the answering service picks up whenever the system quits.

Call 240-355-3333

Family-owned since 1981. Call 240-355-3333.

Shemtov Systems covers Montgomery County and the Washington DC metro.