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Plumbing, Electrical, HVAC Services in Waltham, MA

Call Green Energy AC Heating & Plumbing Repair in Waltham, MA today for dependable plumbing, HVAC, and electrical service. Free estimates, 12-month 0% interest financing, and no dispatch fees available now!

Every home system has a limit. Your furnace gets louder. Your pipes take longer to drain. That old light switch zaps your finger one too many times. These are more than annoyances—they’re early warnings. In Waltham, where historic triple-deckers sit next to modern townhomes, you need a service team that understands how to repair and modernize all kinds of systems. At Green Energy AC Heating & Plumbing Repair, we deliver smart, professional, and honest service built around your safety, comfort, and efficiency. Whether it’s an upgrade or an emergency, we bring 24+ years of trusted experience into every job—and leave your home better than we found it.
Looking for savings that actually make a difference? Check out our ongoing promotions to get high-quality service at a price you’ll love.

Waltham’s Go-To Plumbing Team for Real Fixes, Not Guesswork

Water shouldn’t ruin your floors, walls, or routine. However, when plumbing problems are left unchecked, even a slow leak can result in significant repair costs. Our experienced plumber in Waltham and Avon, MA, gets ahead of those disasters by pinpointing issues early. We repair leaks, replace corroded pipes, clear backed-up drains, and install new water heaters without disruption to your home.

If disaster strikes after hours, our returning customers gain access to our emergency plumber near Waltham, MA, for immediate assistance. We’ve handled everything from basement floods to burst pipes—and we show up prepared with the parts and tools to resolve it on the spot.

Tip: A sharp rise in your water bill, mildew smell, or faint bubbling from drains usually means it’s time to call us—before it gets worse.

Stay Cool All Summer with Reliable AC Services in Waltham

If your air conditioner is working overtime and still not cooling the house, something’s wrong. We provide full-service air conditioning services in Waltham, MA, including diagnostics, coil cleanings, capacitor replacements, thermostat upgrades, and refrigerant recharge. Our techs don’t guess—they test every part of your system to find and fix the real cause.

Considering an upgrade? We’ll break down your current performance and explain your AC maintenance cost in Waltham, MA, so you know what you’re working with. For systems that are past their prime, our AC installation & replacement service helps you select a properly sized unit that balances energy use and comfort. No one-size-fits-all setups—just smart cooling that fits your space.

Why it matters: A correctly installed AC doesn’t just cool better—it lasts longer and saves hundreds in energy costs every summer.

Custom HVAC That Works With Your Home, Not Against It

HVAC systems aren’t just about heating and cooling—they’re about airflow, insulation, zoning, and smart usage. Our commercial HVAC services in Waltham and Belmont, MA are designed for both homeowners and property managers looking to eliminate hot spots, uneven temperatures, and skyrocketing utility bills.

More residents are turning to heat pump systems in Waltham, MA to combine heating and cooling in a compact, efficient package. These all-in-one units are ideal for Massachusetts’ shifting seasons and make energy efficiency a lot easier to achieve. Whether it’s a ducted or ductless setup, we design your heat pump system for maximum performance—without oversizing or underserving your layout.

Little-known fact: Duct issues—not system problems—are the top cause of inefficient HVAC performance. We inspect every inch before making recommendations.

Heating Services That Keep You Safe in Waltham Winters

A furnace that only runs half the time is doing more harm than good. Whether it’s making loud noises, producing weak heat, or just won’t turn on, we provide fast, accurate heating services in Waltham, MA. Our team repairs pilot lights, blower motors, heat exchangers, and thermostats—restoring safe, strong heat before the next cold front.

We also offer full system replacements, walking you through your furnace installation & replacement cost in detail. No guesswork—just honest comparisons, clear pricing, and expert installation. 

For existing customers, our emergency furnace repair is on standby 24/7, and our annual furnace maintenance services are built to prevent those emergencies from ever happening.

If you rely on radiant heat, our expert team provides complete boiler installation, repair & maintenance, including zoning fixes and fuel-to-gas conversions for improved efficiency.

Watch for: Pilot light flickering yellow, weird smells from vents, or a system that turns off before reaching temperature.

Breathe Cleaner with Air Quality and Duct Solutions

Indoor air pollution often flies under the radar—until you start noticing allergies, stuffiness, or constant dust buildup. Our thorough duct cleaning services in Waltham remove contaminants that your HVAC system circulates every day. Cleaner ducts lead to better air, stronger airflow, and longer system life.

For those actively looking up indoor air quality near me, we go further by installing UV lights, advanced filters, and whole-home purifiers that actually improve respiratory health. And when you pair those upgrades with improved insulation, your air gets cleaner and your HVAC stops overworking.

That’s why our home insulation company in Waltham and Brighton, MA, focuses not just on adding material, but sealing out pollutants, blocking outside air, and helping your indoor environment stay consistent. From attic air sealing to garage insulation, we build a full protection system around your comfort.

Did you know? Poor insulation often forces your HVAC system to run 20–30% longer to maintain temperature. We help reverse that.

Electrical Services That Match Today’s Power Needs

Today’s homes need more electricity than ever before. If your panel is overloaded or your wiring hasn’t been touched in decades, you’re at risk for surges, breaker trips, and even fire. Our trained electrician in Waltham, MA, delivers fast, safe updates including panel upgrades, new outlets, circuit additions, and full rewires for remodels or additions.

We also offer stunning, energy-efficient indoor lighting installation services, enhancing ambiance and functionality in kitchens, bathrooms, and basements. Need to plug in your EV? We install code-compliant EV charger installations in Waltham, MA setups so you can charge smarter and safer, without risking overloads or long charging times.

Important: If you see flickering lights, smell burning near outlets, or need power strips to run basic appliances, it’s time for a professional electrical check.

Never Lose Power Again with Automatic Generators

A blackout on a winter night or in the middle of a summer heatwave doesn’t just shut off the lights—it can spoil food, disable medical devices, and freeze your pipes. Our whole house emergency generators start instantly when power cuts out, restoring lights, HVAC, refrigerators, and more without skipping a beat.

We size your system based on real-world needs, install it with full permitting, and test everything in-house. It’s more than backup power—it’s peace of mind.

Dive into our reviews and discover why so many locals continue to choose us for fast, friendly, and dependable solutions.

Why Waltham Homeowners Call Us First

Whether you’re living near the Charles River or just off Moody Street, we’ve served homes like yours for decades. At Green Energy AC Heating & Plumbing Repair, we bring care, teamwork, and growth into every job. That means we listen, we work clean, and we get it done right.

Our team is background-checked, factory-trained, and constantly improving. We’ve earned an A+ BBB rating, consistent mention in the Boston Best Pick Report, and recognition from the Boston Chamber of Commerce—but we’re most proud of the calls and referrals from loyal customers.

Reach out to Green Energy AC Heating & Plumbing Repair in Waltham, MA today. Get free estimates, no dispatch fees, and 0% interest financing on all approved installs. Call us at 781-236-3421.

Testimonials

My furnace was not working this morning. I called Green Energy and within a few hours Terry was here and quickly took care of the problem. Terry has been here before and is very professional and friendly.
Ginny C.
Satisfied Customer
Very professional operation. Great technicians. Follow COVID protocol. Leave your house and property very clear with no trace that work had been done.
Susan G.
Satisfied Customer
Quinn was really nice, professional, and answered all my questions in a clear and easy manner. The woman I spoke with on the phone was also very kind, so I will definitely use this company again.
Peter T.
Satisfied Customer
Green Energy Mechanical is a pleasure to work. We had both air conditioning and heating installed. During both jobs, GEM was thorough and professional from start to finish.
Sussane P.
Satisfied Customer
I could not be more pleased with the service provided. We have upgraded our water heater to a tank less. We are also getting our heat and ac installed by them. They care for your home like you would
Bryan G.
Satisfied Customer

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