Boiler Installation& Replacementin Cambridge, MA
Cambridge boiler replacement and combi boiler installation from a licensed plumbing company that works in Cambridge basements every week. Navien and Rinnai systems sized for triple-deckers, condos, and single-family homes across all Cambridge neighborhoods. Master Plumber LIC 16763-PL-M.
"Boston Tank Swap made everything very easy. They replaced a leaking tank, coordinated with my tenants, and sent...""Boston Tank Swap made everything very easy. They replaced a leaking tank, coordinated with my tenants, and sent before-and-after photos — very professional"— Stefan Repac
"Boston Tank Swap made everything very easy. They replaced a leaking tank, coordinated with my tenants, and sent before-and-after photos — very professional"
"Fast, professional, and honest. Everything was clean and clearly explained. Would 100% recommend."
"Called us back within an hour. Got it resolved the same day, two days before Christmas. Will definitely work with them again."
"We had an unexpected leak from our tank on a weekend. The team was responsive and able to provide weekend service and saved us a big headache. They were kind and professional… and we have hot water back less than 24 hours later. Thank you!"
"Boston Tank Swap upgraded us to a Navien tankless and the unlimited hot water has been amazing. Great service and David was very easy to work with!"
"Our old water heater finally gave out, I was recommended to boston tank swap by a friend that just went through a leaking tank emergency as well. Dave was polite, clean, and took the time to explain everything without any upselling or pressure. You can tell they actually care about doing things right. The price was fair, and the whole experience was stress-free. Total time without hot water was less than 24 hours. It's nice to find an honest local plumber in Newton who still answers the phone and shows up when they say they will. Highly recommend!"
Boiler Services for Cambridge Homeowners
Whether you need a full boiler replacement or want to upgrade to a space-saving combi system, Boston Tank Swap handles every step of the process for Cambridge properties.
Boiler Replacement in Cambridge
Replace your aging or failing boiler with a modern high-efficiency system built for Cambridge homes. Boston Tank Swap removes old cast iron and atmospheric boilers and installs properly sized condensing replacements that cut heating costs and deliver consistent warmth across every zone.
Common in Cambridge homes:
- Cast iron boiler replacement in older basements
- Oil-to-gas boiler conversion upgrades
- High-efficiency condensing boiler installation
- Multi-zone heating system replacements
Every installation includes:
- Full system assessment and heat load calculation
- Gas piping, venting, and safety requirements
- Cambridge permit and inspection coordination
- Old boiler removal and disposal
- System startup, testing, and walkthrough
Every boiler replacement is overseen by a licensed Master Plumber and passes inspection before the job is considered complete.
Combi Boiler Installation in Cambridge
Consolidate your heating and hot water into one wall-mounted unit with a combi boiler installation in Cambridge. Navien NCB and Rinnai combi systems are built for the space constraints and multi-use demands of Cambridge condos, triple-deckers, and single-family homes.
Why Cambridge homeowners go combi:
- Heating and hot water from one compact unit
- Wall-mounted design frees up basement floor space
- Eliminates a separate water heater or indirect tank
- 95%+ efficiency reduces National Grid heating bills
Combi installation includes:
- Navien NCB or Rinnai combi system installed
- System sizing matched to heating load and hot water demand
- Gas supply, PVC venting, and condensate drainage
- Cambridge permit and gas inspection
- Old boiler and water heater removal
Combi boilers require precise sizing and installation. We evaluate every Cambridge home individually to ensure the system matches the actual heating and hot water demand.
Boiler Services for Cambridge's Diverse Housing Stock
Cambridge's housing ranges from pre-war triple-deckers to converted Victorian single-families, modern condos near Kendall Square, and dense multi-family rental properties throughout the city. Each building type presents different boiler installation challenges, and we work in all of them regularly.
Triple-Deckers with Old Cast Iron Boilers:
Cramped basements, narrow stairs, and aging cast iron systems that need to come out piece by piece. We handle the logistics of working in tight mechanical rooms common across Inman Square, Central Square, and East Cambridge.
Victorian and Pre-War Single-Family Homes:
Older homes near Harvard Square and Porter Square with original hydronic heating systems, stone foundations, and venting that routes through masonry chimneys. These homes benefit from modern condensing boilers with PVC venting.
Condos and Converted Brownstones:
Space constraints make combi boilers ideal for Cambridge condos. A single wall-mounted unit replaces both the boiler and water heater, freeing up utility closet space in buildings near Kendall Square, Cambridgeport, and Mid-Cambridge.
Multi-Family Rental Properties:
Cambridge landlords need reliable heating systems that pass inspection and serve tenants without callbacks. We coordinate installations to minimize disruption to occupied units and handle all permitting.
Licensed Master Plumber (Lic #16763-PL-M) ensuring every Cambridge boiler installation meets MA state code and passes the local gas inspection.
The City of Squares
Home to Harvard, MIT, and some of the densest residential neighborhoods in Greater Boston, Cambridge has a housing stock that reflects over 150 years of construction. Many homes still run boilers that are 20 to 30 years old, and the infrastructure behind them is often even older.
Whether you live in a triple-decker near Davis Square, a Victorian near Brattle Street, or a condo conversion in East Cambridge, Boston Tank Swap delivers professional boiler replacement and combi boiler installation tailored to your property.
95%+
Efficiency Rating
1 Day
Typical Install Time
5 ZIPs
Cambridge Coverage
Full
Permit & Inspection
Boiler Replacement Considerations in Cambridge Properties
Cambridge's residential buildings were largely built between the 1890s and the 1950s, and many of the boiler systems in those homes reflect the technology of their era. Cast iron atmospheric boilers, some converted from oil to gas decades ago, are still running in basements across Cambridge. These systems were built to last, and many have, but their efficiency is a fraction of what modern equipment delivers.
The mechanical rooms in Cambridge properties present their own challenges. Triple-decker basements are often shared between units, with low ceilings and tight access paths. Victorian homes have boilers tucked into stone foundation basements where headroom is limited and the stairway down is narrow. Condo buildings may have individual utility closets that were never designed to accommodate modern HVAC equipment.
Boston Tank Swap works in these environments regularly. We understand the space constraints, venting limitations, and building coordination required for boiler replacement in Cambridge properties. Every installation is planned around the actual conditions of the building, not a generic template.
When Cambridge Homeowners Typically Call for Boiler Replacement
Most Cambridge homeowners contact us after experiencing a change in their heating system that they can no longer ignore. Boilers tend to decline gradually, and the tipping point usually arrives during the heating season when the system is under full load.
Common triggers include:
- Boiler failing during a cold snap, leaving the home without heat
- Uneven heating across floors of a triple-decker or multi-level home
- Rising National Grid bills without a corresponding increase in thermostat settings
- Visible corrosion on the boiler body, leaks at fittings, or rust-stained water in the system
- Purchasing a Cambridge property with an aging boiler that a home inspector flagged
- Repeated service calls on a boiler that is 15 to 25 years old
- Wanting to free up basement space by switching from a floor-standing boiler and water heater to a single wall-mounted combi
Boiler failures in the middle of a New England winter are disruptive, and Cambridge's dense housing means that a failure in a multi-family property affects multiple households. A planned replacement during a shoulder season is almost always preferable to an emergency swap in January.
Combi Boilers for Cambridge Homes
Combi boilers have become increasingly popular in Cambridge for a straightforward reason: they solve two problems with one piece of equipment. In a city where basement square footage is at a premium and many homes still run separate boilers and water heaters, a wall-mounted combi system eliminates one appliance entirely and reduces the footprint of the other.
For Cambridge condos and smaller units, this is often the decisive factor. A Navien NCB-190 handles the heating and hot water needs of most one to two bathroom units while taking up less wall space than a medicine cabinet. For typical Cambridge two to three bedroom homes, the NCB-210 provides a balance of heating capacity and domestic hot water flow that handles everyday demand without oversizing the system. Larger single-family homes or properties with higher heating loads may require the NCB-240 for its 199,900 BTU output.
We also install Rinnai combi boiler systems, which offer a comparable feature set and performance profile. The choice between Navien and Rinnai often comes down to the specific installation requirements, available venting options, and gas supply capacity at the property.
Navien NCB-190
120,000 BTUCambridge condos, smaller units, and single-bathroom homes where space is at a premium. Delivers solid heating performance with enough domestic hot water capacity for everyday use.
Navien NCB-210
150,000 BTUThe most commonly installed combi in our Cambridge projects. Covers typical two to three bathroom homes and provides a strong balance of heating capacity and hot water flow for the building types common across Cambridge neighborhoods.
Navien NCB-240
199,900 BTUSized for larger Cambridge single-family homes with higher heating loads or multiple simultaneous hot water fixtures. Handles the demand of bigger properties without sacrificing comfort during peak usage.
Also available in Cambridge: Water heater replacement and tankless installation. If your home uses a separate water heater, Boston Tank Swap handles tank and tankless replacements across all Cambridge neighborhoods. Cambridge water heater services →
Boiler replacement pricing: See our detailed cost breakdown for boiler and combi boiler replacements in the Greater Boston area, including Cambridge. Boiler replacement costs →
Ready to Replace Your Boiler in Cambridge?
Get a professional assessment and written estimate for your Cambridge boiler replacement or combi boiler installation. No pressure, no upselling.
Boiler Questions for Cambridge Homeowners
How much does boiler replacement cost in Cambridge, MA?
Boiler replacement cost in Cambridge depends on the type of system, the complexity of the installation, and whether any venting or gas piping modifications are needed. Standard boiler replacements and combi boiler installations each have different price ranges. We provide a detailed written estimate after evaluating your home so there are no surprises.
Is a combi boiler a good fit for a Cambridge triple-decker?
Combi boilers work well in many Cambridge triple-decker units, especially where each unit has its own mechanical space. The wall-mounted design frees up floor area in tight basement utility rooms, and the combined heating and hot water output eliminates the need for a separate water heater. Sizing depends on the unit layout, number of bathrooms, and heating load.
Do I need a permit for boiler installation in Cambridge?
Yes. All gas-fired boiler installations in Cambridge require a plumbing permit and a gas inspection by the local inspector. Boston Tank Swap handles the full permitting process and coordinates the inspection as a standard part of every boiler installation we perform in Cambridge.
Can you replace a cast iron boiler with a wall-mounted combi in Cambridge?
In most cases, yes. Many Cambridge homes still have older cast iron atmospheric boilers that take up significant floor space. Replacing one with a wall-mounted Navien or Rinnai combi boiler can reclaim that space while providing both heating and hot water from one unit. The existing baseboard or radiator distribution system typically stays in place.
How long does a boiler installation take in a Cambridge condo?
A straightforward boiler replacement in a Cambridge condo where the new unit goes in the same location typically takes one day. Combi boiler conversions that require new gas piping, venting changes, or water heater removal may extend into a second day depending on the scope of work and building access requirements.
What size Navien combi boiler do I need for my Cambridge home?
The correct size depends on your home heating load and hot water demand. The Navien NCB-190 handles most Cambridge condos and smaller units. The NCB-210 covers typical two to three bathroom homes and is our most frequently installed model. The NCB-240 is sized for larger homes with higher heating loads or simultaneous hot water demand across multiple fixtures.
Do you install Rinnai combi boilers in Cambridge?
Yes. We install both Navien and Rinnai combi boiler systems in Cambridge. Both brands produce high-efficiency condensing units that perform well in the local climate. The recommendation depends on the specific installation requirements, available gas supply, and your heating and hot water needs.
What is the difference between a boiler and a water heater?
A boiler heats water that circulates through your radiators or baseboards to heat your home. A water heater heats water for domestic use such as showers and sinks. A combi boiler does both from one unit. Many Cambridge homes have a separate boiler and water heater, and a combi boiler installation can replace both.
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Boston Tank Swap also provides boiler installation and water heater services in Somerville, Watertown, Belmont, and Arlington.