PurePro Trio Boilers – Maximum Efficiency for NH Winters

Up to 87% AFUE, Energy Star rated modulating boilers with panel radiator expertise. Factory-direct pricing for Epsom & Southern NH homes.

Why Trio Boilers Excel in NH

Trio Advantages for Cold Climate:

Modulating Burner: Energy Star rated up to 87%, adjusts firing rate 10-100% (vs on/off boilers)
Panel Radiator Optimized: Designed for hot water radiator systems
Cast Iron Heat Exchanger: 3-pass design, lifetime warranty for the original owner (transferable up to 20 years to a new owner)
Factory-Direct: 30-40% savings vs big box brands

Trio vs Traditional Boilers:

Feature	Trio	Weil-McLain	Crown	Buderus
AFUE	Up to 87%	83%	82%	87%
Modulation	10-100%	On/Off	On/Off	25-100%
Heat Exchanger	Cast Iron 3-Pass	Cast Iron	Cast Iron	Cast Iron
Heat Exchanger Warranty	Lifetime (transferable up to 20 yrs)	Varies by model	Varies by model	Varies by model

Heat exchanger warranty is lifetime for the original owner, transferable up to 20 years to a new owner. Modulation range is full 10-100%, unlike standard on/off burners.

Complete Radiator System Installation

Heat Loss Analysis

Manual J boiler sizing + radiator audit. Perfect BTU match.

Zoning Design

Thermostatic radiator valves per room. No more thermostat wars.

Factory Setup

Trio-trained techs program outdoor reset for efficient cold-season operation.

Read: what our customers say about us!

    
 
 
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   Dan Rohn 
 5 November 2026
 
 
  I’m very happy with the whole experience. Everyone was friendly and professional.
  
 
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   Jack McCaughey 
 4 November 2026
 
 
  Hot water heater failing within warranty. Working on a labor only quote to replace the unit. Appreciate them fitting in this evaluation on the same day I called.
  
 
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   Angela Pratt 
 2 November 2026
 
 
  The technician was professional, polite and I appreciated that she was so thorough.

Happy to see young woman in the technical field!!
  
 
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   Ralph Scannelli 
 29 October 2026
 
 
  Phil came did my maintenance and came back to replace parts that were so needed . He has done above and behind . Am very happy! Thank you so much
  
 
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   Jacob Birch 
 22 October 2026
 
 
  Trevor was a reasonable, helpful, and nice man. Great service technician. Avery was easy to talk to on the phone and great at coordinating the project. Wesley too was a great source of info and VERY knowledgeable
  
 
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   Tara Wilkerson 
 16 October 2026
 
 
  Amazing service! From Avery to Trevor.. Quick, thorough and professional.
  
 
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   Wayne Slango 
 14 October 2026
 
 
  Phil at Custom climate tuned up my furnace and as always did an excellent job, in past visits he found and repaired poor work done by previous contractors. Have always appreciated Custom climate for all my HVAC work
  
 
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   Thomas Galvin 
 11 October 2026
 
 
  Good customer service
  
 
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   Matt Parks 
 10 October 2026
 
 
  Trevor from Custom Climates was on time, professional, and answered any questions I had about my older furnace. I definitely recommend giving them a call to schedule your annual maintenance - you won't be disappointed!
  
 
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   joseph corona 
 9 October 2026
 
 
  Did a great job replacing two control boards on my outside unit. Very professional. Very reasonable pricing. Definitely recommend.
  
 
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   Amanda Earle 
 8 October 2026
 
 
  Great experience and very professional. I'm happy we went with Custom Climates!
  
 
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   David Barrett 
 5 October 2026
 
 
  Great company that doesn’t try to up sell. Just there with a fair price when you need them.
  
 
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   Denise McKenne 
 30 September 2026
 
 
  Maintenance for our AC - needed to check out a rattling and whirring sound. Called on a Saturday and they were here on Monday. Person was professional and was very thorough on checking the system out to correct the problem. He took the time to listen to us and had the issue resolved in a very short time. We have this company service our AC and heating system yearly. They have been great at all times. I would recommend them to my friends and family.
  
 
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   Donald Porter 
 30 September 2026
 
 
  Found a real problem on a routine check up. Installed a new boiler the next day..two days before Christmas! Did a great job, cleaned up, and were very respectful of the house. Thanks, Guys!
  
 
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   Babydoc 7862 
 30 September 2026
 
 
  Excellent service and timely communication. Love them!
  
 
 
  
 
 
   Google rating score: 4.8 of 5, based on 174 reviews

Frequently Asked Questions

Our technicians hold Mitsubishi’s top-tier Diamond Elite certification through in-person factory training programs. This rare NH designation ensures every install meets exact manufacturer specs for maximum performance, efficiency, and full 12/12 warranty protection.

Yes—compatible with most old iron radiator systems. Free valve upgrade included.

Combi = instant hot water, 50% less space. Perfect for radiator homes.

Whisper quiet—45dB (library conversation level).

$150 annual tune-up. The cast iron heat exchanger carries a lifetime warranty.

Your Southern NH Trio Boiler Installer

Factory Direct – Panel Radiator Experts – Epsom & Beyond