HVAC & Plumbing Services in Waltham, MA
Comfort in Every Unit, Without Sharing a Thermostat
Your home is supposed to take care of you, not the other way around. When the heat quits on a January night off Moody Street, or the top floor never cools in July, one phone call puts a licensed technician on the way from our Newton shop, about 20 minutes from downtown Waltham.
Tell us what is going on at your Waltham 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 Waltham, MA
Close to three in ten Waltham homes were built before 1940, and almost a quarter of the city’s housing sits in two and three family buildings. Cooling those is a different job from cooling a single family ranch, so we fit the system to the building.
AC Installation & Replacement
Every Waltham 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 with none. In a two or three family we plan each unit on its own equipment so nobody is sharing a thermostat with the neighbors.
- 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, 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 Waltham 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 Waltham?
Free estimates on new systems. Same day repair visits when we can.
Heating in Waltham, MA
About half of Waltham homes heat with natural gas, close to a quarter use electric heat, and nearly one in five still runs on oil. Furnaces, boilers, baseboard 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 or a heat pump, and in a multi family we keep each unit’s system separate.
- 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 Waltham, with a full combustion analysis and a carbon monoxide safety check on every gas and oil 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 Waltham?
24/7 no heat calls all winter. Free estimates on replacements.
Plumbing in Waltham, MA
Need a plumber in Waltham? 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 line, venting and condensate work that goes with it. In an older Waltham two family, venting and 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. Waltham is on MWRA water and sewer, and in older buildings 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 Waltham?
Upfront quotes before the work starts. Active leaks go to the emergency line.
Electrical and Indoor Air Quality in Waltham, MA
Panel space and air quality are the two questions that come up right after a heat pump quote in Waltham. We handle both in-house instead of sending you to 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. Older Waltham buildings often need the service upgraded before heat pumps go in, so we check the panel 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, whether your Waltham home is a newer condo or an older house that lets in every draft.
- 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 Waltham Customers Say
Why Waltham homeowners choose Accurate Baker Elman
- Over 30 years, same company, same trade.
- Mitsubishi Elite Diamond Contractor, which unlocks the extended manufacturer warranty.
- Two local shops. Newton is about 20 minutes from downtown Waltham.
- HVAC, plumbing and electrical under one license and one schedule.
Rebates and financing
Waltham homes are served by Mass Save through Eversource for electric and National Grid for gas, so 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 and handle the paperwork.
Book service in Waltham, MA
Tell us what is happening at your Waltham home and we will get you on the schedule. If it is an emergency, skip the form and call.
Waltham HVAC and plumbing questions
Our Newton shop is about 20 minutes from downtown Waltham, and our Franklin shop backs it up from the south. 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 Waltham Building Department issues building, plumbing and gas, and sheet metal permits, and electrical permits come from the separate Wires Department. A single heating replacement often needs more than one. Massachusetts requires a licensed contractor to pull those permits, not the homeowner. We file them, schedule the inspections, and see it through to sign-off.
It depends on the fuel, the system type, and how much of the existing ductwork or piping can be reused. A gas furnace swap in a home with sound ductwork sits at the low end. A boiler replacement in an older two family 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.
This comes up constantly in Waltham’s older houses and two families heated by a boiler. Ductless mini splits are usually the answer: one outdoor unit feeding indoor heads in the rooms that matter, with no soffits and no lost closet space. High velocity small duct systems are the other option when you want the look of central air and have some chase space to work with. Both cool in summer, and heat pump versions heat in winter too.
Yes. Nearly one in five Waltham homes still heats with oil, and the older buildings run boilers of every vintage. We service, repair and replace gas and oil boilers, and we will tell you plainly when a well-kept boiler has years left versus when it is time to plan the replacement.
Waltham homes are served by the Mass Save program through Eversource and National Grid, and qualifying air source heat pump installations are eligible for 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 for your specific project before you commit.
All of it. Downtown and Moody Street, Waltham Common, Piety Corner, Banks Square, Warrendale and Kendal Green, the neighborhoods along Main Street and Trapelo Road, and out past Brandeis, Bentley and Prospect Hill Park to the city line. ZIP codes 02451, 02452 and 02453. 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 an older Waltham building often needs a panel upgrade, and coordinating that yourself across two contractors is where projects stall.