Sierra Heating & Air ConditioningSierra Heating & Air ConditioningSteady comfort, all year long
This HVAC contractor in Baltimore handles the full range of heating and cooling work — no-heat calls, AC that won't cool, full system replacements, and seasonal tune-ups — for rowhomes and detached houses from Canton to Roland Park. If you searched for an HVAC contractor near me and want a straight answer on cost and timing, you get a ballpark up front and the exact price confirmed on a free on-site visit. The crew works clean, protects floors and stair walls on the way in, and explains the repair-versus-replace math before anything gets installed.
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Text or call about your hvac contractor job — a quick photo helps us quote fast.
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On time, done to standard, and tidy when we leave.
Diagnosis and repair of central air conditioners and heat pumps that won't cool, short-cycle, freeze up, or trip the breaker. Common Baltimore-summer fixes include low refrigerant, failed capacitors, and clogged condensate lines on units tucked behind Federal Hill rowhomes.
Full central air conditioner and heat pump replacement, right-sized to the home instead of guessed by tonnage. Spring (March-April) is the calm window to replace before Baltimore's June-through-August heat drives up lead times.
No-heat and short-cycling furnace repair, including igniters, flame sensors, blower motors, and control boards. January cold-snap calls get prioritized because no-heat lead times lengthen citywide.
High-efficiency gas furnace replacement sized to the actual heat load, not the old unit's nameplate. A properly matched furnace heats evenly through the drafty back rooms common in older Charles Village and Bolton Hill homes.
Repair, replacement, and cold-weather setup for air-source heat pumps that both heat and cool. A heat pump lowers summer cooling cost and fits homes moving off oil or electric-resistance heat.
Ductless mini-split systems for rowhomes, additions, and finished basements without existing ductwork. Mini-splits matter when running new ducts would mean opening plaster walls and giving up closet space.
Service and replacement for hot-water and steam boilers feeding radiators — still common in Mount Vernon and older Guilford houses. A modern high-efficiency boiler keeps the radiant comfort while cutting fuel use.
Seasonal tune-up plans that cover a fall heating check and a spring cooling check. Furnace and boiler tune-ups are best scheduled early fall (September-October); AC checks belong in spring before peak season.
If your furnace or AC is under about 10 years old and the failed part is minor, a repair is the right call — you keep a working system for a few hundred dollars. If the unit is 15-plus years old, the repair runs past $1,500, or you're facing a second breakdown in a season, replacement usually wins because you stop pouring money into a system that's near the end anyway. For older Baltimore rowhomes without existing ductwork, a ductless mini-split fits where adding ducts would mean tearing into plaster and losing closet space; a conventional split system fits homes that already have good ductwork and want the lowest equipment cost. If you heat with an old boiler and radiators, a modern high-efficiency boiler keeps the radiant comfort you're used to, while switching to a heat pump lowers summer cooling cost but changes how the heat feels. The trade-off across all of these is upfront cost versus monthly energy bills and how many more years you plan to stay in the house.
| On-site diagnostic / minimum charge | $150 |
| AC or furnace tune-up | $150 - $250 |
| Common AC repair (capacitor, contactor, cleaning) | $150 - $600 |
| Refrigerant recharge / leak repair | $300 - $900 |
| Common furnace repair (igniter, sensor, motor) | $150 - $850 |
| Central AC or heat pump replacement | $5,500 - $11,000 |
| High-efficiency furnace replacement | $4,500 - $9,000 |
| Ductless mini-split (single zone, installed) | $4,000 - $7,500 |
| Boiler replacement | $6,000 - $13,000 |
Your exact price is confirmed before any work begins.
Baltimore's housing stock skews old — narrow brick rowhomes near Patterson Park and Fells Point, formstone fronts, and detached homes up in Roland Park and Guilford — which is why sizing and access matter more here than in newer suburbs. Many rowhomes have no room for standard ductwork, so ductless mini-splits and slim high-velocity setups often fit where a conventional system won't, while the older stone-and-plaster homes near the Baltimore Museum of Art frequently still run boilers and radiators worth keeping. Baltimore City is an independent city with its own permit process separate from Baltimore County, and summer humidity coming off the Inner Harbor pushes cooling systems harder than the temperature alone suggests — a good reason to size AC by load, not by square-foot rules of thumb.
Neighborhoods we cover: Canton, Federal Hill, Hampden, Roland Park, Mount Vernon, Fells Point, Locust Point, Charles Village, Bolton Hill, Guilford.
The on-site minimum is $150, which covers the diagnostic visit and the technician's time. From there, the exact repair price is confirmed on-site before any work begins, so there are no surprise charges.
Same-day service is available on most days, and no-heat calls are prioritized during winter. During January cold snaps, demand spikes across Baltimore City and lead times lengthen, so calling early in the day helps.
Repair usually makes sense if the unit is under about 10 years old and the fix is minor. Replacement wins if the system is 15-plus years old, the repair runs past $1,500, or it has failed more than once in a Baltimore cooling season — the technician walks you through the numbers on-site.
Yes. Ductless mini-splits are a strong fit for Canton, Federal Hill, and Fells Point rowhomes that have no existing ductwork, since they avoid tearing into plaster walls and don't sacrifice closet space for ducts.
Book AC installs and replacements in spring (March-April) before cooling demand peaks June through August. Schedule furnace and boiler tune-ups in early fall (September-October), before heating demand rises November through February.