
Heating repair, tune-ups, no-heat diagnostics, boiler and furnace service, heat pumps and mini-splits for homes and businesses across our active MA & CT service areas.
24/7 No-Heat Availability
Call for current emergency dispatch
Boilers & Furnaces
Repair, maintenance and replacement
Heat Pumps & Mini-Splits
Ducted and ductless comfort systems
Local Project Proof
Real Tandem work across active service areas
Click any service for detailed information, FAQs, and booking.
Furnace installation, maintenance, repair, and emergency heating service.
View ServiceHeat pump installation and replacement throughout Massachusetts and Connecticut for ducted, ductless and cold-climate systems.
View ServiceHeat pump and mini-split repair throughout Massachusetts and Connecticut for heating, cooling and performance problems.
View ServiceCold-climate heat pump installation and replacement throughout Massachusetts and Connecticut.
View ServiceEmergency heating repair for no-heat conditions, boiler failures, furnace failures and urgent heating-system problems.
View ServiceNo-heat diagnosis for furnaces, boilers, heat pumps and related controls in active service areas.
View ServiceFurnace troubleshooting and repair for no heat, ignition problems, airflow issues, controls and mechanical failures.
View ServiceFurnace installation and replacement for residential and commercial heating systems where appropriate.
View ServiceBoiler installation and replacement for hydronic heating systems, including residential and commercial applications.
View ServiceHydronic heating service for boilers, circulators, zone controls, baseboard systems and related piping.
View ServiceHot-water baseboard heating diagnosis, repair, zone troubleshooting and piping service.
View ServiceRadiant hydronic heating diagnosis, repair and installation support where offered and applicable.
View ServiceDuctless mini-split repair for no heat, no cooling, leaks, icing, error codes and performance problems.
View ServicePreventive heating maintenance for furnaces, boilers, heat pumps and eligible heating equipment.
View ServiceThermostat and HVAC control diagnosis, repair, replacement and installation for heating and cooling systems.
View ServiceCommercial heating repair, maintenance and replacement support for businesses, multifamily and managed facilities.
View Service
Expert boiler repair, maintenance, and troubleshooting for gas, oil, and electric boilers in Western Massachusetts and Worcester County. 24/7 no-heat emergency service available.
View ServiceCustomers do not always know whether the issue is the boiler, furnace, thermostat, circulator, heat pump, or controls. Start with the symptom and we can route you to the right service.
Tandem Mechanical handles service, maintenance, diagnostics, repair and replacement planning across common residential and commercial heating systems. Recommendations are based on the equipment condition, fuel type, controls, piping or ductwork, and what we find on site.
Hydronic and steam system diagnostics, controls, pumps, valves, leaks, maintenance and replacement planning.
No-heat diagnostics, ignition and control issues, airflow concerns, maintenance and replacement options.
Ducted heat-pump repair, cold-climate system support, diagnostics, maintenance and installation options.
Single-zone and multi-zone ductless repair, maintenance, replacement and new installation planning.
Book a preventive heating visit for your boiler, furnace, heat pump, mini-split or hydronic system. We inspect system operation, controls, visible components and overall performance, then explain any concerns we find before they become a no-heat emergency.
Maintenance can reveal worn parts, control issues, circulation concerns and other conditions before peak heating demand.
A system that is checked and maintained before winter is less likely to surprise you during the coldest part of the season.
If we find a concern, you can make a repair or replacement decision before it becomes an emergency.
We can help with boilers, furnaces, heat pumps, mini-splits, hydronic systems and related heating equipment.
From quick repairs to full system replacements, our licensed technicians treat your home with respect. We arrive on time, explain the work in plain language, and stand behind every job with clear pricing and a satisfaction guarantee.
Drop cloths, shoe covers, and a clean workspace — every visit, every job.
Fully licensed in Massachusetts and Connecticut with full insurance coverage.
Same-day appointments and 24/7 emergency service when you need help fast.