High-Efficiency NG & LP Heating | Greater Portland, Maine
High-Efficiency Boilers
& Furnaces
Modern condensing boilers and furnaces running on natural gas or propane deliver 95%+ efficiency, a major upgrade from older cast-iron units. Lower fuel bills, more consistent heat, and a smaller footprint. Read our boiler replacement guide to learn when upgrading makes sense.
- 95%+ AFUE condensing technology
- Natural gas and propane systems available
- Wall-hung units save space over cast-iron boilers
- Pairs with existing hydronic or forced-air distribution
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Why Upgrade Your Heating System
Signs Your Boiler or Furnace Needs Replacing
If any of these sound familiar, a free assessment will tell you exactly where you stand.
Your system is 15+ years old
Older cast-iron boilers and furnaces run at 60-80% efficiency. A new condensing unit captures heat that your old system sends up the chimney. Our boiler maintenance guide covers what to watch for as systems age.
Fuel bills keep climbing
Efficiency degrades over time. If your fuel costs are rising faster than fuel prices, your system is losing efficiency and working harder than it should. Pairing a boiler upgrade with insulation and air sealing cuts fuel use even further.
Frequent repairs or breakdowns
If you are spending more on repairs each year, the cost of a new high-efficiency system often pays for itself through lower fuel bills and zero repair costs. Learn more: High-Efficiency Boiler Installation in Maine.
Uneven heat throughout the house
Cold spots, rooms that never warm up, or radiators that take forever to heat are signs your system cannot keep up with your home's heating needs. Learn more: Is Your Heating System the Right Size for Your Home?.
From Assessment to Installation
We make the whole process simple, transparent, and stress-free.
Free Home Assessment
We evaluate your current heating system, distribution type (hydronic, forced air, or radiant), fuel source, and your home's heating load to recommend the right replacement.
Custom System Design
We specify the right high-efficiency boiler or furnace for your home, calculate your financing options, and provide a detailed written quote with no surprises.
Professional Installation
Our crew removes your old unit, installs the new high-efficiency system, connects it to your existing distribution, and verifies everything is running properly before we leave.
What Our Customers Say
"All work was performed in a timely and detailed manner. There was a HUGE attention to detail. All company associates were highly professional, extremely courteous, and demonstrated passion and compassion in their work. I highly recommend."
"The process of working with Horizon Homes was pleasant from start to finish. When cleanup was complete, it was like no one had ever been there. I cannot recommend Horizon Homes enough."
"An inspector from Efficiency Maine said 'Oh yeah, Horizon, their work is always great.' I'm a first-time homeowner, let me add to the five-star pile. Horizon Homes was the right decision for us."