HVAC Solutions Led by Mitsubishi Mini Split Expertise

From cutting-edge ductless systems to traditional HVAC services, we have the expertise to keep you comfortable year-round.

Authorized Mitsubishi Elite Diamond Contractor – The Highest Level of Excellence.

Mitsubishi Mini Split Services Epsom NH – Diamond Contractor

As authorized Mitsubishi Diamond Contractors serving Epsom and Southern NH, Custom Climates delivers premium ductless heat pump installations. Enjoy whisper-quiet operation, independent zoning, and energy savings up to 40% over traditional systems.

Energy-efficient heating & cooling
Zone control for multi-room comfort
Simple installation, no ductwork needed
WiFi remote control via app

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Heating Systems

Reliable furnace repair, installation, and boiler services for Epsom NH homes. Gas, oil, and electric systems.

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Cooling Systems

Central AC repair, replacement, and new installations. Keep cool with SEER2-compliant systems.

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HVAC Maintenance Plans

Priority service, 15% discount, annual tune-ups, and bi-annual inspections. Peace of mind guaranteed.

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Indoor Air Quality Solutions

Air purifiers, UV lights, whole-home humidifiers, and ventilation upgrades for healthier indoor air.

Improve IAQ

Emergency Repairs

24/7 HVAC emergency service across Southern NH. No heat? No cool? We’re there within hours.

Emergency Service

Commercial HVAC

Business HVAC installations, maintenance contracts, and energy audits for Epsom commercial properties.

Commercial Services

The Custom Climates Process

Free in-home assessment by our Mitsubishi-certified technicians. We’ll evaluate your space, discuss your needs, and provide expert insights tailored to your home’s unique layout and energy goals.

✨ Backed by over 12 years of Mitsubishi-focused experience and Elite Diamond Contractor status, ensuring a thorough, no-obligation evaluation.

Custom system design optimized for your home and budget. Our team prioritizes aesthetics, functionality, and efficiency to deliver a solution that fits seamlessly and performs exceptionally.

✨ Unlike standard approaches, we focus on long-term value with designs that enhance your home’s comfort and energy savings—drawing from 2,000+ successful installations.

Professional installation with 100% satisfaction guarantee. Our factory-trained technicians ensure a clean, precise setup, followed by ongoing support for peak performance.

✨ Enjoy industry-leading warranties (up to 12 years on parts and labor) and 24-hour service, with rigorous standards for durability and weatherproofing.

Read: what our customers say about us!

Financing Options

Flexible Financing for Every Budget

Custom Climates partners with industry-trusted financing providers to offer flexible payment options for Mitsubishi mini splits and complete HVAC upgrades.

0% Interest for 25 months*
Low monthly payments
Extended warranty coverage

Special financing options available for Mitsubishi mini split systems.

*Terms & Conditions Apply, Approval Through Synchrony Bank Required

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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.

Every home is unique—factors like square footage, insulation quality, existing ductwork (or lack thereof), energy goals, and budget all matter. Our Mitsubishi-certified technicians perform a free in-home assessment to evaluate your space, discuss your needs, and recommend the most efficient, cost-effective solution—whether it’s a ductless mini-split for zoned comfort or something else. With over 2,000 systems installed and Elite Diamond Contractor status, we prioritize designs that deliver long-term value and seamless integration.

Ductless mini-split systems (like Mitsubishi’s) have no ducts—instead, they use compact indoor units connected to an outdoor condenser via small refrigerant lines. This allows zoned heating/cooling (control rooms individually), easier installation in older homes or additions, quieter operation, higher energy efficiency, and better aesthetics. Traditional central systems rely on ductwork, which can lose efficiency and require more invasive installs. Ductless is ideal for New Hampshire homes without ducts or for supplementing existing systems—offering superior comfort and savings.

Mitsubishi ductless mini-splits use advanced inverter technology for precise control, variable-speed operation, and exceptional efficiency—often reducing energy bills significantly compared to traditional systems. Many models qualify for rebates and incentives in New Hampshire. As an Elite Diamond Contractor, we ensure proper sizing and installation to maximize performance, helping you save on heating/cooling while enjoying consistent comfort year-round.

We stand behind our work with Mitsubishi’s industry-leading warranties: up to 12 years on parts and 12 years on labor (when properly registered and installed by certified technicians). This far exceeds standard coverage, thanks to our factory-trained team and Elite Diamond status. Proper installation preserves full warranty protection—contact us for details on how we deliver this extended coverage.

For optimal performance, efficiency, and longevity, we recommend annual or bi-annual service: spring for cooling prep and fall for heating. Regular maintenance prevents breakdowns, maintains warranty validity, and keeps energy costs low—especially important in New Hampshire’s variable climate. We offer convenient maintenance plans with priority scheduling and 24-hour service support.

Yes—Custom Climates provides 24/7 emergency service for breakdowns, no matter the time or weather. Our factory-trained technicians respond quickly to keep your home comfortable during extreme New Hampshire winters or hot summers. We’re here when you need us most—call anytime for fast, reliable help.

Absolutely. We service, repair, and maintain all brands of HVAC systems, including existing Mitsubishi units. Our expertise in ductless mini-splits and general HVAC makes us a go-to for tune-ups, diagnostics, and fixes—ensuring your system runs efficiently and lasts longer.

Costs vary based on home size, number of zones, system type (e.g., single vs. multi-zone), and any custom needs—but we focus on value, long-term savings, and available rebates. As an Elite Diamond Contractor with 12+ years of focused experience, we provide transparent, competitive quotes after a free in-home assessment. Many customers see payback through energy savings and comfort improvements—schedule your no-obligation consultation today!

Yes—Mitsubishi’s Hyper-Heat (H2i) technology delivers reliable, full-capacity heating down to 5°F and continues operating efficiently even to -13°F, making it perfect for New Hampshire’s harsh winters. No need for backup systems in most cases. Our certified installations ensure peak performance, so you stay warm without high costs or interruptions.

We’re not just dealers—we’re assemblers focused on excellence: Elite Diamond Contractor certification, over 2,000 Mitsubishi systems installed, factory-trained technicians, customer-focused design, 24-hour service, and industry-leading 12/12 warranties. We prioritize quality, aesthetics, and long-term reliability over quick, budget installs—delivering white-glove service and unparalleled support every step of the way.

Not Sure Which System Is Right for You?

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