For Massachusetts homeowners looking to get off oil, the sticker shock can hit right away. 

One social media post captured a dilemma many people face: an aging air-conditioning system, growing concern over fuel costs, but no access to the state's biggest heat pump rebates.

Here's what to know

In a Reddit thread on the site's r/Massachusetts community, one homeowner asked about replacing oil heat with electricity in a house that already has three-zone central A/C but isn't eligible for Mass Save incentives. 

The original poster wrote: "Our AC is original to our house, 1999. We bought the house in 2022 - every summer we cross our fingers the condenser will not go out on us. It's serviced regularly but am anticipating that going sooner than later. So wondering if we can/should replace that & change the heat system at the same time."

Commenters said that making the switch would likely mean replacing the current cooling setup with heat pumps, bringing a significant upfront expense.

In the subsequent discussion, estimated costs for a ducted heat pump conversion ranged from $20,000 to $30,000. Other commenters said mini-split quotes for smaller homes were also coming in near $30,000. The top comment put it simply, "You need to change your 3-zone AC to heat pumps, that's it."

Some commenters also said municipal electric rates can improve the economics of heat pumps, even without large rebates. One commenter living in a muni-electric town shared, "We've got a 2 zone ducted Mitsubishi cold climate unit and it's been great, even down to -15F." Another homeowner who removed oil heat and installed Mitsubishi mini-splits in 2022 said the project cost $24,000 but added, "The heat pumps are about 1/2 the cost of oil heat."

The replies made clear that electrification can look different from one house to another. Some commenters said oil may still be useful as a backup in very cold weather, even if heat pumps handle most of the heating the rest of the time. 

One person wrote, "Honestly change to a heat pump when your AC goes but keep your oil as backup heat. We use heat pumps primarily but need to switch to oil if it's 25F or less out." Another user similarly suggested, "Heat pumps also function as AC's, so if your AC goes it makes sense to replace it with a modern heat pump."

What can be done?

Upgrading a heating and cooling system can be one of the most effective ways to lower utility bills and protect against rising energy costs, but only if the math works for your home. 

For homeowners sorting through those choices, Palmetto's Comfort Plan network can help you find efficient heating and cooling solutions and connect you with vetted installers. And for anyone not ready to pay the full cost upfront, Palmetto's Comfort Plan includes $0-down HVAC subscription options that can lower your heating and cooling costs by up to 50% and also includes 12 years of free maintenance.

Where can I learn more?

For more perspective on whether high heat pump costs pencil out without major incentives, these stories dig into the tradeoffs. 

• In central New Jersey, homeowners are getting 15K to 20K HVAC quotes as they debate switching to heat pumps.

• A new partnership lets homeowners install high-efficiency heat pumps with no large upfront payment.

• New electric-heating strategies could shave $350 off homeowners' annual energy bills in some homes.

Get TCD's free newsletters for easy tips, smart advice, and a chance to earn $5,000 toward home upgrades. To see more stories like this one, change your Google preferences here.