Tired of hot upstairs rooms and a system that runs nonstop? We diagnose what's actually wrong, explain your options honestly, and deliver lasting comfort across Waltham.
A broken AC or furnace doesn't wait, and neither should your service company. With technicians based around the Waltham area, we provide fast, reliable service and hands-on care from experienced pros who know the climate and housing stock of our region.
Whatever your system needs, a quick fix, a smart upgrade, or a full replacement, our team covers it start to finish with workmanship that lasts.
Source-removal duct cleaning, not a quick vacuum and a coupon.
Full system installs with balanced airflow and clean, code-compliant work.
Year-round heating and cooling from one efficient system.
Seasonal tune-ups that catch small problems before they strand you.
Heating and cooling repairs on every major brand, most finished in one visit.
Heating systems of every type repaired and tested before we leave.
New air conditioners sized by load calculation and commissioned properly.
Igniters, flame sensors, blowers, and boards fixed, most in one visit.
Mini-splits for the rooms that never get comfortable.
Aging system? We'll show you the numbers before you decide.
Warm air, frozen coils, or a unit that won't start, diagnosed and fixed right.
Furnace replacements matched to your home, not the biggest unit on the truck.
Taking calls now·Speak with someone about your HVAC needs
Two systems do most of the work in a typical home, and they're the two we repair most. Here's what to expect when you call.
A dead air conditioner on a hot afternoon is the call we run most. The usual culprit is a small electrical part, a capacitor or contactor, that our trucks carry, so most AC repairs are finished in one visit. Every repair comes with an upfront quote and an honest opinion on repair versus replacement.
Most furnace breakdowns come from a handful of parts: flame sensors, igniters, inducer motors, and control boards. We find the one that failed and fix it, usually in a single visit. We also check for the problems that matter for safety, like a cracked heat exchanger, and give you an upfront price before any work begins.
HVAC trouble rarely announces itself politely. If you're facing any of these problems, call us today for fast, professional help.
Low refrigerant, a failed compressor start, or a dirty condenser can all masquerade as the same symptom. Real diagnosis beats parts-swapping every time.
AC repairShort cycling wastes gas, stresses the heat exchanger, and never quite warms the house. We find the safety control tripping it and fix the cause.
Furnace repairEnergy bills creeping up while comfort drops means the system is working harder than it should, dirty coils, clogged filters, or failing motors are the usual suspects.
Maintenance & tune-upsWe size replacements with a real load calculation, not a guess, so the new system delivers even temperatures and lower bills from day one.
System replacementIf some rooms get dusty faster than others, leaky or dirty duct runs are the likely cause. We inspect, clean, and seal what we find.
Air duct cleaningA garage office, a converted attic, or that one bedroom the ducts never reached, a ductless mini-split solves it without tearing open walls.
Mini-split installationAn HVAC system never fails at a convenient time. We schedule fast, show up on time, and arrive with the parts to finish the job.
The person at your door knows HVAC inside and out, from superheat readings to error codes, because we hire seasoned pros and keep them sharp on the methods that actually work.
If a $40 capacitor fixes it, that's what we'll tell you. We quote repair and replacement honestly, with real numbers, and let you choose, no scare tactics, no pressure.
Installations get the full treatment, real load calculation, correct line sets, sealed and balanced ductwork connections, and a complete commissioning test before we leave.
Waltham HVAC has proudly served this community and the surrounding MA towns for over a decade. We understand the local climate and the wear it causes because this is our home, not just our service area.
Anyone can bolt in a condenser. Lasting comfort comes from understanding the home and the system together, and that's where our years working in this area pay off, fewer callbacks, faster fixes, and installs that pass inspection without drama.
Get a price quote from a local team that knows homes like yours.
Every job runs through the same proven steps, so nothing gets missed and the fix actually lasts.
Ring (339) 600-1214 whenever it suits you. We'll talk through the symptoms, tell you if anything needs immediate attention, and lock in a visit time that fits your schedule.
We inspect the whole system, not just the obvious symptom, and give you a straight answer: what failed, why, and what repair versus replacement really costs.
From swapping a contactor to setting a new condenser, every job gets the same standard: right parts, right sizing, right workmanship.
The job isn't done until conditioned air is flowing and verified. We'll also show you the simple habits, and offer the maintenance schedule, that add years to the system's life.
Upfront pricing · Same-day service available
A house with no AC in a heat wave gets dangerous, not just uncomfortable. Here's what our team does from your first call to restore your comfort fast.
Our team answers your call right away, gathers the information we need, cooling or heating, running or dead, any error codes on the thermostat, and gets you on the schedule, often same-day. We'll walk you through switching the system off if it's iced over or short-cycling in the meantime.
Our experienced technician arrives at your property with diagnostic tools and the common replacement parts ready to begin on arrival. No waiting weeks, no runaround.
The fault is pinpointed, capacitor, motor, refrigerant leak, control board, or the compressor itself. Right away, we fix it there and then whenever parts allow, or lay out honest replacement options if the unit is done.
We don't disappear once the visit is done. We follow up to confirm everything is holding, and for systems in their later years we'll suggest the maintenance rhythm that keeps them reliable instead of surprising you.
"The furnace quit at 11 pm with the temperature dropping fast and a newborn in the house. They answered right away and talked me through checking the thermostat and breaker, then had a technician out first thing. Heat was back before noon. Absolute pros."
"Our AC died on the hottest day of the year and a tech was out the same afternoon. He found a blown capacitor, swapped it from stock on the truck, and had cold air blowing before dinner. Fair price, no drama, and he checked the rest of the system while he was there."
"From the estimate to the final walkthrough, the whole install was clear and professional. The crew wore shoe covers, put down drop cloths, hauled off the old equipment, and the final bill matched the quote to the penny. The new system is so quiet we barely notice it running. I'd send anyone in Waltham their way."
Your home runs on this equipment every single day. Here's what sets us apart from other local service companies.
We don't send a rookie with a gauge set and a hope. Each technician brings genuine field experience in diagnosis, safe gas and electrical work, and clean installation, the kind of depth that turns a service call into a lasting fix.
Doing it right is built into how we install. We handle the refrigerant, gas, electrical, and airflow details precisely, pull permits where local code requires them, and commission the full system before we call it done, and we tell you what we did and why.
We don't wait for failures to profit from them. Every maintenance visit is built around your system's age and condition. For older equipment, a spring coil cleaning is the difference between year 10 and year 15. Period.
From our home base out to the neighboring towns, our technicians are based close enough to respond fast wherever your home or business sits.
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