Waltham, MA HVAC Services
Every neighborhood has homes with different needs. GEM has worked in Waltham long enough to know what yours requires.
GEM Plumbing & Heating Services, LLC has provided HVAC services in Waltham since 1949. From triple-deckers near Moody Street to single-families in the Highlands, we understand this city’s housing stock. Your system gets serviced by people who have seen your situation before and know how to handle it.
Ready to talk to a home services specialist?
Heating and Cooling for Waltham Homes
Waltham is not one-size-fits-all. Victorian-era homes near the Common, mid-century ranches in South Waltham, condos along the river. Each one has different heating and cooling challenges.
GEM helps Waltham homeowners stay comfortable. We have worked in every part of this city and understand what different homes need. Our technicians arrive knowing what they are likely to find and how to address it.
Emergency repairs, system replacements, routine maintenance, efficiency upgrades. Whatever your Waltham home needs, we handle it.
Waltham’s Trusted HVAC Company Since 1949
You want technicians who know the area and have solved problems like yours before.
GEM technicians have served Waltham for decades. We have replaced boilers in older homes near the commuter rail, installed heat pumps in condos along the Charles, upgraded furnaces in homes throughout Warrendale, and helped families from Cedarwood to Piety Corner stay comfortable. That local knowledge makes a difference.
How GEM Makes Service Easy
Getting professional HVAC work should be straightforward, not stressful.
Here is our process:
Call or book online. Waltham is in our core coverage, and same-day service is often available.
Your technician explains the problem and cost before starting. You understand what you are paying for.
We fix it right. Your home works. You move on.
HVAC Specials & Discounts
Take advantage of our current offers & coupons!
Save on Energy Upgrades
with GEM and Mass Save® Rebates
The Home Comfort Club
Service plan starting at
$49.99 /mo
Peace of Mind, Worry-Free
Members get discounts on repairs, priority scheduling, and seasonal tune-ups that keep systems running efficiently year-round.
Preserve your home’s value, extend your equipment’s life span, and ease your worries with our membership plans.
Trust us to always send our best local, trained, and screened technicians to your home, no matter the hour.
With us, you can spend less money to take better care of your home.
Keep all parts of your home operating at peak efficiency with regular maintenance tune-ups.
Get Pre-Approved Financing
Waltham Heating and Cooling Services
Massachusetts winters hit hard. Your heating system needs to perform reliably through months of cold.
GEM keeps Waltham homes comfortable with heating and cooling services matched to what this city needs.
Air Conditioning
Central AC keeps your whole home comfortable through summer. When it fails during a heat wave, you feel it everywhere.
AC systems work hardest during extreme heat, exactly when failures tend to happen. Regular maintenance prevents most problems, and when something does fail, we get there fast.
- Air Conditioning Replacement: That Waltham AC from 2008 is costing you more than a new one would. We replace old units with modern equipment that cools better and costs less to run.
- Air Conditioning Repair: Waltham AC quit during a heat wave? We respond fast whether you are in a condo along the Charles or a house in the Highlands. You get cool air back.
- Air Conditioning Maintenance: Spring tuneups for Waltham AC systems catch problems before summer. We clean coils, check refrigerant, and make sure you are ready for the hot months.
- Air Conditioning Installation: Adding central air to your Waltham Victorian or condo? We work around existing layouts and get you cooling that actually reaches every room.
Furnaces
Your furnace keeps your home livable all winter. When it runs reliably, you stop thinking about it.
Gas furnaces are common throughout Waltham. These systems need proper maintenance to perform efficiently, especially in older homes where ductwork may have its own issues.
- Furnace Replacement: Waltham’s older homes often have furnaces that are twenty or thirty years old. A new one heats better, runs quieter, and cuts your gas bill noticeably.
- Furnace Repair: Waltham furnace making noise or not heating right? We troubleshoot the problem and fix it. You get your heat back without the runaround.
- Furnace Maintenance: A fall tuneup for your Waltham furnace means no surprises in January. We inspect everything and make sure your system is safe and ready.
- Furnace Installation: Installing a new furnace in your Waltham home? We match the unit to your existing ducts and layout. You get even heat without cold spots.
Heat Pumps
Heat pumps provide heating and cooling from one system while cutting energy costs significantly. More Waltham homeowners are making the switch.
Heat pumps work by moving warmth rather than creating it, which explains their efficiency advantage. As a Mass Save approved installer, we help Waltham residents access rebates that reduce upfront costs.
- Heat Pump Replacement: Early heat pumps struggled in Massachusetts winters. If yours is more than ten years old, a new cold-climate model will heat your Waltham home much better.
- Heat Pump Repair: Heat pump in your Waltham home not switching modes or running constantly? We diagnose the issue and repair it properly.
- Heat Pump Maintenance: Heat pumps run year-round, so they need service in spring and fall. We keep Waltham systems running efficiently through every season.
- Heat Pump Installation: Waltham homeowners switching to heat pumps get heating and cooling in one system. We design the layout and install it so both modes work efficiently.
Ductless Mini-Splits
Waltham’s older homes often lack ductwork. Ductless systems add heating and cooling without invasive construction.
Adding cooling to a triple-decker, conditioning a converted attic, solving comfort problems in specific rooms. Ductless mini-splits handle all of these with individual temperature control.
- Ductless Mini-Split Replacement: Old ductless system in your Waltham condo running loud or not cooling well? New units are whisper quiet and far more efficient. We swap them out.
- Ductless Mini-Split Repair: Ductless unit in your Waltham home leaking, beeping, or not responding to the remote? We service all brands and fix the problem.
- Ductless Mini-Split Maintenance: Ductless units need filter cleaning and coil maintenance. We service Waltham systems so they run efficiently and last longer.
- Ductless Mini-Split Installation: Waltham triple-decker or condo without central air? Ductless units mount on the wall and give you heating and cooling without any ductwork.
Boilers
Many Waltham homes rely on boilers for steady, even heat. These systems work reliably when properly maintained.
Boilers with radiators or baseboard heat are common in Waltham’s older homes. GEM services gas and oil boilers throughout the city.
Radiant Heating
Radiant floor heat delivers even, comfortable warmth. Popular in Waltham renovations and condo conversions.
We design and install radiant systems for homeowners who want the best.
Oil to Gas Conversions
Waltham homes still using oil can benefit from natural gas conversion. Eliminates deliveries and typically reduces costs.
We manage complete conversions for Waltham homeowners from start to finish.
Call (833) 222-2953 to schedule services.
Questions?
Indoor Air Quality in Waltham
Urban air quality affects what you breathe inside. Traffic, density, and older homes all play a role.
GEM helps Waltham homeowners improve indoor air with solutions that work.
Humidity Control
Balanced moisture levels year-round.
Too dry in winter, too humid in summer. We install equipment that maintains healthy levels automatically.
Air Purifiers
Cleaner air for your Waltham home.
Whole-home purification removes particles and contaminants from your air continuously. Cleaner air means better health.
Air Filtration
Advanced filtration for healthier indoor air.
Better filters catch what standard filters miss. Important in urban environments like Waltham.
Thermostats
Precise temperature control for your Waltham home.
Modern thermostats save energy and improve control. We install everything from basic programmable models to smart home systems.
Air Handlers
The heart of your HVAC airflow.
Air handlers move conditioned air through your ducts. When they have problems, you get uneven temperatures and higher bills. GEM keeps them running right.
Additional Services for Waltham Homes
Certain comfort challenges require specialized approaches.
GEM offers advanced services beyond standard heating and cooling.
Ductwork
Efficient airflow throughout your home.
Leaky or poorly designed ducts waste energy. We repair, seal, and replace ductwork throughout Waltham.
Zoned HVAC
Independent temperature control for different areas.
Control temperatures independently in different areas. Useful for multi-level homes and varied heating needs.
Geothermal
Ultra-efficient heating and cooling from the earth.
For Waltham homes with adequate land, geothermal systems offer exceptional efficiency using stable underground temperatures.
Packaged HVAC
All-in-one heating and cooling systems.
All-in-one units for homes where indoor mechanical space is limited.
GEM Has Your Whole Home Covered
Schedule HVAC Services in Waltham Today
For HVAC services in Waltham, call the team that has kept Greater Boston comfortable since 1949. We know this city. We know its homes. We know how to keep them running. Call or book online. Same-day appointments available.
HVAC FAQs
Does GEM work on condos and triple-deckers?
Yes. We service all types of Waltham homes. Whether you need work on a condo unit or a triple-decker, we handle it.
What heating system works best for Waltham’s older homes?
Many older Waltham homes use boilers effectively. These systems can last decades with proper maintenance. Heat pumps are increasingly popular for homes looking to add cooling or reduce operating costs. We evaluate your situation and explain options.
How can I reduce heating costs in my Waltham home?
High-efficiency equipment, duct sealing, improved insulation, and heat pumps all contribute to lower costs. Mass Save rebates improve returns on many upgrades. We assess your situation and recommend where to start.
Are heat pumps practical for older Waltham homes?
Absolutely. Ductless heat pumps are especially popular for older homes because they require no ductwork installation. Mass Save rebates help with costs, and energy savings are significant.
How often should Waltham homes receive HVAC service?
Twice yearly: spring for cooling, fall for heating. Homes with older equipment or heavy use may benefit from more frequent attention.