Replace your boiler with a quieter, more efficient ecodan® system
If your current boiler is aging, inefficient, or expensive to maintain, switching to an air to water electric system can be a smart, future ready upgrade for your home.

Boiler replacement FAQ
Boilers most commonly experience issues related to normal component wear, such as failed circulator pumps, valves, ignition components, or control sensors.
Residential boilers typically operate for 15–30 years, depending on the boiler type, installation quality, water conditions, and maintenance practices.
Common indicators include:
- Uneven or insufficient heating
- Unusual noises or repeated shutdowns
- Visible corrosion or leakage
- Increasing frequency of service calls
- Reduced efficiency compared to earlier operation
Homeowners can typically handle basic non technical tasks, such as:
- Monitoring system pressure and temperature
- Checking for visible leaks or corrosion
- Keeping vents and surrounding areas clear
Repairs, combustion adjustments, and internal work generally require a licensed professional.
Suitability depends on factors such as:
- Home heat loss and insulation levels
- Climate and design winter temperatures
- Compatibility of existing heat emitters (radiators, floors, fan coils)
- Available electrical capacity
A detailed system assessment is required to determine compatibility. Click here to find a local Mitsubishi HVAC dealer in your area:
Total cost and operating outcomes vary and depend on:
- Equipment selection and system design
- Required electrical or distribution upgrades
- Local labor rates
- Utility pricing and usage patterns
- Eligibility for federal, state, or utility incentives
A qualified contractor can provide a project specific estimate and cost comparison.
ecodan models
Innovative designs distribute heat evenly through fan coils, radiators, baseboard emitters, or underfloor heating, and provide cooling through hydronic fan coils.

ecodan Air-to-Water
ecodan is a compact, single-phase air-to-water (ATW) heat pump designed for hydronic heating and cooling, as well as domestic hot water (DHW). The system provides both heating and cooling through the use of a heat pump which distributes heat evenly throughout the space

ecodan Hydrobox
Designed with a small footprint and front‑access serviceability, the all‑in‑one Hydrobox includes key water‑circuit components such as pumps, an expansion vessel, a magnetic filter, a booster heater, and a plate heat exchanger.
The system professionals trust where it matters most: their own home

Reasons to choose hydronic ecodan
Sustainability
The system’s greater energy efficiency comes from its ability to provide consistent, even comfort without generating the harmful greenhouse gas emissions produced by traditional heating and cooling systems.

Quiet operation
The outdoor unit features ultra-quiet operation as low as 41 - 45 dB(A), a noise level that is lower than that of a normal conversation between two people.

Easy maintenance
Designed with a small footprint and front-access serviceability, the system’s “all-in-one Hydrobox” provides easy access to all of the key water circuit components for simplified maintenance.

Boiler integration
Boiler Integration enables the system to automatically switch from heat pump to boiler based on ambient temperature and system needs, ensuring consistent comfort and efficient performance.

Cold climate performance
Hyper-Heating INVERTER® models provide heating even with ambient outdoor temperatures as low as -22° F, producing up to 100% heating capacity at 5° F.

Eco-friendly
Systems such as ATW heat pumps that heat without burning fossil fuels may qualify for local, state, and utility rebates and tax credits.

Freeze protection
Eliminate freeze risk with the use of refrigerant instead of water in piping between outdoor and indoor units.

All-in-one system
Beyond heating and cooling, the ecodan all-in-one system also provides domestic hot water (DHW) for showers and taps at temperatures up to 158°F, even in extremely cold conditions.

Upgraded comfort for boiler-heated homes.
Upgrade both your comfort and energy efficiency with ecodan®, the next generation in comfort technology
