HVAC & Plumbing Services in Lexington, MA
Cool a Mid Century House Without Wrecking Its Lines
Your home is supposed to take care of you, not the other way around. When the boiler quits on a January night off Massachusetts Avenue, or the bedrooms never cool in July, one phone call puts a licensed technician on the way from our Newton shop.
Tell us what is going on at your Lexington home. We will call you back with a real time slot, not a two week window.
Years in Massachusetts homes
From our Newton shop
Newton and Franklin
Emergency line
Air Conditioning in Lexington, MA
Lexington runs from pre-war houses near the Centre to mid-century modern neighborhoods to new construction on old lots, and each one cools differently. We start by walking the house, not by matching the tonnage on the old sticker.
AC Installation & Replacement
Every Lexington home is different. We measure yours first, then help you pick the system that fits it, whether that is central air on your existing ducts or a ductless heat pump for a house that never had them. In a mid-century house with a flat roof and a slab, placement is most of the job, so we plan it before we quote it.
- Central air systems
- Ductless mini splits for homes with no ductwork
- High velocity small duct for pre-war homes
- Cold climate heat pumps that heat and cool
- Load calculation on every quote
- Permits pulled and inspection scheduled
AC Repair
When your AC stops working on a hot day, you need help fast. Our Newton shop is a short run up Route 128 or Route 2, so we offer same day visits when we can, and you can reach us any time, day or night.
- System not cooling or blowing warm
- Ice on the refrigerant lines
- Water pooling around the air handler
- Breaker tripping or unit not starting
- Short cycling and weak airflow
- All major brands serviced
AC Maintenance & Tune-Ups
We check your AC each spring, before the first hot week. A yearly visit helps catch small problems early, keeps your warranty in good standing, and gives us a look at the outdoor unit after a long Lexington winter.
- Coil clean and inspection
- Refrigerant charge check
- Capacitor and electrical test
- Condensate drain cleared
- Thermostat calibration
- Written report every visit
Need cooling help in Lexington?
Free estimates on new systems. Same day repair visits when we can.
Heating in Lexington, MA
Just under half of Lexington homes heat with natural gas and close to a third still run on oil, one of the higher oil shares inside Route 128. Boilers, furnaces, radiators or heat pumps, we work on all of it.
Heating Installation & Replacement
A new system should fit your home, not just match the old one. We look at your house first, then help you pick the right size so it heats evenly all winter. If you are ready to move off oil, we can walk you through a gas conversion where there is gas on your street, or a heat pump where there is not.
- Gas furnaces
- Steam and hot water boilers
- Oil to gas conversions
- Cold climate heat pumps
- Radiant and ductless systems
- Old equipment removed, permits handled
Heating & Furnace Repair
A cold house can’t wait. When your heat stops working, we come up from Newton and get it running again. Our team is ready all winter long, even in the middle of the night.
- No heat calls, 24/7
- Ignition and pilot failures
- Thermostat and control faults
- Circulator pump failure
- Boiler pressure loss
- Frozen condensate lines
Heating Maintenance & Tune-Ups
An early fall tune-up, before the first cold night in Lexington, with a full combustion analysis and a carbon monoxide safety check on every gas, oil and propane system we service.
- Combustion analysis
- Carbon monoxide test
- Heat exchanger inspection
- Burner clean and adjust
- Safety control test
- Flue and venting check
No heat in Lexington?
24/7 no heat calls all winter. Free estimates on replacements.
Plumbing in Lexington, MA
Need a plumber in Lexington? The same company that handles your heating handles your water, so one visit can cover the boiler or furnace, the water heater and the pipes between them.
Tanked & Tankless Water Heaters
Navien and Rinnai installation and replacement, including the gas or propane line, venting and condensate work that goes with it. In an older Lexington house the venting route and the gas line sizing usually decide whether tankless makes sense, so we look at both before we quote.
- Navien, Rinnai and Rheem
- Gas line sizing and upgrades
- Venting and condensate routing
- Tank to tankless conversions
- Descaling and annual service
- Permits pulled
Kitchen & Bathroom Plumbing
Fixtures, toilets, sinks, dishwasher lines and remodel rough-ins, quoted upfront before the work starts. Lexington is on MWRA water and sewer, and in older houses we check the supply and drain lines before we add anything new.
- Faucet and fixture installation
- Toilets, showers, tubs and vanities
- Garbage disposals
- Dishwasher and ice maker lines
- Remodel rough-in
- Leak and drain repair
Plumbing problem in Lexington?
Upfront quotes before the work starts. Active leaks go to the emergency line.
Electrical and Indoor Air Quality in Lexington, MA
Panel space and air quality are the two questions that come up right after a heat pump quote in Lexington. Our own licensed electricians handle the panel in-house, so you don’t have to find a second contractor.
Electrical Service & Panel Upgrades
Panel upgrades for heat pump and whole-home AC conversions, plus general electrical service, done by our own licensed electricians. Lexington has more heat pump conversions than most towns we cover, and the panel is usually what decides the schedule, so we check it before you commit to new equipment.
- 100 amp to 200 amp upgrades
- Dedicated HVAC circuits
- EV charger circuits
- Outlets, switches and lighting
- Code corrections
- Permits and inspection handled
Indoor Air Quality
Filtration, ventilation and humidity control planned alongside the equipment instead of added on later. In a tightly built new house that means planning fresh air in, and in an older one it usually means dry winter air and a damp basement in the same plan.
- Whole-home air filtration
- UV purification
- Humidifiers and dehumidifiers
- Fresh air ventilation
- Duct sealing and repair
- Allergy and mold concerns
Planning a heat pump conversion?
We quote the panel upgrade and the equipment together, on one estimate.
What Lexington Customers Say
Why Lexington homeowners choose Accurate Baker Elman
- Over 30 years, same company, same trade.
- Mitsubishi Elite Diamond Contractor, which unlocks the extended manufacturer warranty.
- Over 30 years working on New England homes, from pre-war to new build.
- HVAC, plumbing and electrical under one license and one schedule.
Rebates and financing
Mass Save rebates and the 0% HEAT Loan apply to qualifying heat pumps and high-efficiency equipment, and we run 0% promotional financing on installs. We check your eligibility with your own utility and handle the paperwork.
Book service in Lexington, MA
Tell us what is happening at your Lexington home and we will get you on the schedule. If it is an emergency, skip the form and call.
Lexington HVAC and plumbing questions
Lexington is about 20 minutes from our Newton shop up Route 128 or Route 2 outside of rush hour. For no heat, no cooling, or an active leak, call the emergency line at (508) 470-4590. We run that line around the clock, and during the heating season we staff it heavily because December through February is our busiest stretch.
Yes for most replacement and installation work. The Town of Lexington issues building, plumbing, gas and electrical permits, and a single heating replacement often needs more than one of them. Massachusetts requires a licensed contractor to pull those permits, not the homeowner. We file them, schedule the inspection, and see it through to sign-off.
It depends on the fuel, the system type, the size of the house, and how much of the existing ductwork or piping can be reused. A gas furnace swap with sound ductwork sits at the low end. A boiler replacement in a large older house sits higher, and a full heat pump conversion is higher still before rebates. We quote the actual job after seeing the actual basement, and we give you the number in writing before any work starts.
Yes, and Lexington has more of them than anywhere else we cover. Flat roofs, slab floors, radiant heat, glass walls and almost no attic or chase space make for a real design problem, and the wrong answer is to force ducts where they were never meant to go. Ductless heads, slim ducted units tucked into a soffit, and careful outdoor placement are usually how those houses get cooled without wrecking the lines of the building.
Close to a third of Lexington homes still heat with oil, so this comes up constantly. The answer depends on whether there is a gas main on your street, how far the run is to the house, and what shape your chimney or venting is in. A cold climate heat pump is the other route, and with current incentives it is often the one that pencils out. We price both, show you the real numbers, and let you decide.
Qualifying air source heat pump installations are eligible for Mass Save rebates and the 0% HEAT Loan. The amount depends on whether you are doing a whole-home or partial-home conversion, what you are replacing, and your household eligibility. Rebate levels change year to year, so we confirm current amounts with your utility for your specific project before you commit.
All of it. Lexington Centre and East Lexington, Meriam Hill, Munroe, Countryside, Liberty Heights, Four Corners, and the mid-century neighborhoods like Six Moon Hill, Peacock Farm and Five Fields. ZIP codes 02420 and 02421. You can see the rest of our coverage on our service area page.
All of it, under one company. Heating and cooling, kitchen and bathroom plumbing, tankless water heaters, electrical service and panel upgrades, and indoor air quality. That matters most on bigger jobs: a heat pump conversion in Lexington usually needs a panel upgrade, and coordinating that yourself across two contractors is where projects stall.