Boiler Installation &
Replacement in Southern NH
Gas, oil, and propane boiler installation and replacement by licensed NH technicians. High-efficiency condensing boilers, hydronic systems, and radiant heat throughout Southern NH.
Gas & Propane Boiler Installation
A high-efficiency condensing boiler can dramatically reduce your heating costs compared to an older standard-efficiency unit. We install Navien, Rinnai, Viessmann, Buderus, Weil-McLain, Trio, and other leading brands throughout Southern NH. Every install is properly sized for your home's heat load and zone layout. Navien and Rinnai combi-boilers handle both heating and domestic hot water in a single compact unit, freeing up basement space and eliminating the separate water heater.
- Gas and propane boiler installation and replacement
- High-efficiency condensing boilers 90+ AFUE
- Hydronic zone systems and radiant heat
- Navien and Rinnai combi-boilers (heat and hot water in one)
- All permits pulled and inspections handled
- NHSaves rebates available
Oil Boiler Installation & Replacement
Many Southern NH homes heat with oil boilers, and when it's time for a replacement we make the process straightforward. We install high-efficiency oil boilers and can also discuss conversion options if you're considering switching to gas or adding a heat pump to reduce oil consumption.
- Oil boiler installation and replacement
- Saint Roch, Energy Kinetics, Burnham, Utica, and Weil-McLain oil boilers
- System flushing and zone valve replacement
- Oil-to-gas conversion planning and installation
- Heat pump hybrid systems to reduce oil use
- 24/7 emergency boiler repair
Boiler Installations
Boiler Brands We Install & Service
Saint Roch
European-crafted cast iron boilers emphasizing efficient heat exchange and durability. A trusted choice for hydronic heating systems.
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Energy Kinetics
System 2000 combines heat and hot water in one fuel-neutral high-efficiency appliance. Whisper-quiet operation with virtually unlimited hot water.
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Navien
Navien condensing boilers and tankless water heaters are among the most efficient available: up to 0.96 UEF tankless and 95% AFUE condensing boilers.
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Rinnai
Innovative tankless water heaters and condensing boilers. Endless hot water with up to 40% energy savings compared to tank systems.
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Weil-McLain
American-made boilers trusted in homes for over a century. Weil-McLain offers a broad lineup of cast iron and high-efficiency gas and oil boilers, and is one of the most-installed boiler brands in Southern NH.
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Viessmann
German-engineered high-efficiency boilers. More than a century of manufacturing excellence and recognized system longevity.
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Buderus
Over 100 years of high-efficiency boiler manufacturing. Buderus cast iron sections are renowned for longevity and reliable performance.
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Burnham
High-efficiency residential and commercial boilers in both oil-fired and gas-fired models, including cast iron and condensing options.
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Utica
Over 90 years of boiler manufacturing. A wide range of gas and oil-fired boilers for hot water and steam heating systems.
Learn moreBoiler FAQ
How much does boiler installation cost in NH?
A boiler replacement in Southern NH typically runs $5,800 to $13,200 installed depending on fuel type, efficiency rating, and whether any piping or zone valve work is needed. We provide free written estimates with all costs included upfront.
How long does boiler installation take?
Most boiler replacements take one to two days. We remove the old unit, install the new boiler, flush the system, test all zones and safety controls, and verify proper operation before we leave.
What is a condensing boiler?
A condensing boiler extracts additional heat from exhaust gases that a standard boiler would vent away, making it 90 to 95 percent efficient versus 80 to 85 percent for standard models. For most NH homes replacing an old boiler, the upgrade pays for itself over time in fuel savings.
What brands do you install?
We install Saint Roch, Energy Kinetics, Navien, Rinnai, Weil-McLain, Viessmann, Buderus, Burnham, Utica, Trio, and others. For gas boilers, Navien combi-boilers are a popular choice since they handle both heat and domestic hot water in one compact unit.
Do you offer emergency boiler repair?
Yes. We provide 24/7 emergency boiler repair throughout Southern NH. Call 603-623-0412 any time.
Get a Free Boiler Estimate
We assess your home, recommend the right system, identify all available rebates, and give you a written quote upfront. No pressure.
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Schedule Online in 60 Seconds
Pick a date and time that works for you. Service, maintenance, or estimate visits, no phone tag.
Contact Information
Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
24/7 Emergency Service
No heat? No hot water? Call 603-623-0412 any time.