Dual Fuel Hybrid Systems – Best of Furnace + Heat Pump

Automatic switching: Heat pump for efficiency (above 30°F), oil/gas furnace backup for extreme NH winters. Max comfort, max savings.

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

Authorized Mitsubishi Elite Diamond Contractor - The Highest Level of Excellence
diamond contractor

Dual Fuel vs Single Systems – NH Performance

Having an optimally operating heating and air conditioning system is crucial to building a pleasant and healthy home.

Custom Climates is here to provide you with the utmost satisfaction in terms of our dynamic equipment and services. With the goal of offering 24/7 emergency service, we provide versatile heating and cooling solutions, positioning us among the top companies in New Hampshire.

Our modern diagnostic tools enable us to quickly identify the cause of malfunctions in your HVAC system.

Dual Fuel Hybrid Systems Epsom NH
System TypeMild Weather (30°F+)Extreme Cold (-5°F)Annual Cost (3,000 sq ft)
Furnace Only90% Efficient90% Efficient$3,200 (Oil)
Heat Pump Only400% Efficient50% or Offline$2,100
Dual Fuel Hybrid400% Efficient90% Efficient$1,680

Key Advantage: Uses heat pump 75% of NH heating season, furnace 25% extreme cold.

How Dual Fuel Hybrid Systems Work

  • Automatic Temperature Switching: Above 30°F → Heat Pump (400% efficient)
  • Below 30°F → Furnace Backup (90% efficient)
  • Seamless 30-second switchover
  • No manual intervention required

4-Season Operation:

  • Winter Extreme: Furnace backup (below 30°F)
  • Spring/Fall: Heat pump heating (mild temps)
  • Summer: Heat pump cooling
  • Winter Mild: Heat pump primary (above 30°F)

Dual Fuel Benefits for NH Homes

BenefitImpactNH-Specific Value
Energy Savings45% vs oil alone$1,520 annual savings
ReliabilityNever fails in extreme coldNH -13°F design temp
ComfortSteady temps year-roundNo defrost interruptions
FlexibilityUses existing oil tankNo fuel conversion needed
Space SavingsSingle system replaces 2Basement/closet friendly

Seamless Switchover Process

Smart Thermostat Control:

  1. Wi-Fi Monitoring → App tracks fuel usage + efficiency
  2. Outdoor Sensor monitors real-time temperature
  3. 30-Second Switch → No comfort interruption
  4. Annual Maintenance → Single service call covers both

Compatible Equipment Matrix

Heat Pump BrandOil FurnacePropane FurnaceNatural Gas
DaikinConfortoPensotti
MitsubishiConfortoPensotti
TraneTrane

Read: what our customers say about us!

Authorized Mitsubishi Elite Diamond Contractor - The Highest Level of Excellence

Frequently Asked Questions

Programmable: Typically 28-35°F based on your utility rates.

Yes—uses current 275/330/500 gal tanks.

Yes—NH Saves + Federal tax credits up to $2,000.

Epsom’s Dual Fuel Hybrid Specialists

45% Energy Savings – Seamless Switchover – NATE Certified