Smarter Comfort in Winchester, MA: Bosch Heat Pump Retrofit for a 1948 Home

When a homeowner in Winchester, Massachusetts set out to reduce natural gas use and improve energy efficiency, they called Denommee Plumbing, HVAC & Electric—a trusted local team that offers a full in-house solution, including expert HVAC installation and licensed electrical services.

This 3,970 square foot, 4-bedroom home built in 1948 had already undergone a round of weatherization improvements like insulation and air sealing. The next step was upgrading to a ducted heat pump system and electrifying domestic hot water, while keeping installation smooth and disruption minimal.

Project Overview

• Home Size: 3,970 square feet

• Location: Winchester, MA

• Build Year: 1948

• Scope: HVAC system with ducted Bosch heat pump, Aerotherm water heater, smart controls, and electrical upgrades

• Rebates & Tax Credits: Over $5,000 combined

A Full-Scope Retrofit, Done Right

This wasn’t just a typical HVAC install. Denommee handled everything—from heat pump system design to code-compliant wiring and panel upgrades—all with their in-house licensed electricians and technicians. That made the process faster, more cost-effective, and stress-free for the homeowner.

Why the Homeowner Chose a Ducted Heat Pump System

With natural gas prices rising and energy goals shifting, the homeowner wanted to partially displace fossil fuel heating with high-efficiency electric systems. Thanks to existing ductwork and refrigerant linesets in good condition, this was an ideal candidate for a ducted heat pump retrofit.

Advantages of a Ducted Heat Pump:

• All-in-one comfort for both heating and cooling

• Quiet performance with inverter technology and ECM motors

• Cleaner energy use by reducing natural gas consumption

• Zoned control with smart thermostats

• Incentives available for electrification upgrades

Denommee’s Mechanical & Electrical Solution

✅ 3 Ton Bosch Variable Capacity Heat Pump (Outdoor Unit)

Installed on a raised and level pad to protect against snow accumulation, the Bosch heat pump provides variable-speed, inverter-driven performance for ultra-efficient year-round comfort.

✅ Bosch 2-Stage ECM Air Handler (Indoor Unit)

Installed in a knee wall location to optimize existing space, the air handler features a two-stage compressor interface and an ECM blower for quiet, steady airflow.

✅ Integrated Smart Controls with Ecobee

With the addition of an Ecobee smart thermostat and a remote temperature averaging sensor, the system can intelligently maintain even temperatures throughout the home—especially valuable in a multi-level 1940s house.

Seamless Electrical Work by Denommee’s Licensed Electricians

One major advantage of working with Denommee is their ability to handle both HVAC and electrical work in-house. For this project, that meant:

⚡ Full-Scope Electrical Integration:

• Dedicated circuits for the Bosch heat pump system and Aerotherm water heater

• Wiring and conduit installed neatly and safely, per Massachusetts electrical code

• Electrical panel updates where needed to support additional load

• Coordination with smart thermostat and sensor placement

Denommee’s electricians work hand-in-hand with the HVAC team, ensuring the systems are powered, protected, and inspected properly. There’s no third-party coordination, no surprises—just one experienced team from start to finish.

✅ Code-compliance is built into every project, including electrical permits, AFCI/GFCI protection, bonding, and proper disconnects.

Domestic Hot Water Upgrade: Bradford White Aerotherm Heat Pump Water Heater

To further cut fossil fuel use, the homeowners opted to replace their older water heater with a Bradford White Aerotherm™ heat pump water heater—one of the most efficient residential hot water solutions available.

Key Features:

• Up to 70% energy savings over standard electric or gas tanks

• Multiple modes: Efficiency, Hybrid, Electric Only, Vacation

• ENERGY STAR® certified for rebate eligibility

• Wi-Fi connectivity for remote monitoring and maintenance alerts

As with the heat pump HVAC system, Denommee’s electricians handled the dedicated 240V circuit and breaker sizing for the new Aerotherm unit—ensuring safe, efficient operation from day one.

Energy Incentives: Over $5,000 in Rebates and Credits

This home’s upgrades qualified for generous rebates and federal tax incentives:

Mass Save® Rebates:

• Up to $1,250 for the Bosch heat pump system

• $750+ for the Aerotherm heat pump water heater

Federal Tax Credits (2024):

• 30% of installed costs (up to $2,000 for qualified heat pump equipment)

Total Incentive Value: Over $5,000

💡 Denommee’s team guided the homeowners through rebate paperwork and ensured the installation met all eligibility requirements.

Project Outcomes: Comfort, Savings, and Peace of Mind

With their HVAC and water heating systems upgraded, and electrical infrastructure modernized, the homeowners now enjoy:

• Reliable year-round comfort from a high-efficiency Bosch system

• Lower energy bills and reduced reliance on natural gas

• Smart temperature control with Ecobee and averaging sensor

• Peace of mind knowing all electrical work meets code

• A future-ready, electrification-friendly setup

And best of all—everything was handled by one trusted contractor.

Why Homeowners Choose Denommee

At Denommee Plumbing, HVAC & Electric, we bring decades of experience to every job. Our in-house team of HVAC technicians, licensed electricians, and project coordinators means you get a one-stop solution for heat pump upgrades, electrification, and energy-saving improvements.

What Sets Us Apart:

• Licensed electricians on staff—no need to hire a separate contractor

• Heat pump design & load analysis tailored to each home

• Rebate and incentive expertise to maximize savings

• Seamless coordination of HVAC, electrical, and smart home controls

• Respectful worksite practices that minimize disruption to your home

Considering an HVAC or Electrical Upgrade in Winchester, MA?

If you’re ready to cut fossil fuel use, improve home comfort, and take advantage of generous rebates, let’s talk.

📞 Contact Denommee today to schedule a consultation and see how our team can help you with a customized, code-compliant, high-performance upgrade.