Think a heat pump won’t save you much in an old, drafty home? This Reddit post is challenging that assumption. One homeowner shared real-world data on their experience with a 5 kilowatt-hour Vaillant heat pump, sparking a discussion about energy (and money) savings as well as efficiency in older homes.
In the r/ukheatpumps subreddit, the user explained that their home had retrofitted insulation, double-glazed windows, original chimneys, and bay windows. Before the heat pump, they relied on gas and electricity trackers, but they switched in mid-February 2025.
Photo Credit: Reddit
They detailed their energy usage and electricity costs for every month since. They saved £160.67 ($219.93) over a year even without solar panels or a battery system. “I’ve had enough of the narrative that savings aren’t possible without solar or battery and that’s just not my experience, especially in an older home,” they said.
Other Redditors were intrigued by, and appreciative of, the data the OP shared. “Finally. A realistic savings post,” one wrote.
“The potential for cheaper (even if only marginally) bills and a more comfortable home is very appealing!” another user said. “The fact that it is straightforward to get big savings with a little work (tuning flow temperatures, getting on the right ToU tariff) is just icing on the cake,” a third person added.
If you’re thinking about your own HVAC options, TCD’s HVAC Explorer can help you understand your choices and save up to 50% on energy bills with an efficient system.
Smart upgrades that slash monthly energy bills
Simple decisions, such as picking the right heat pump and energy rate, can make a noticeable difference in comfort and cost. Consider these partner solutions that make upgrading your HVAC easy and affordable:
• Mitsubishi can help you find efficient heating and cooling solutions for your home and connect you with trusted installers
• Not ready to spend up front? Palmetto’s $0 down HVAC leasing program can lower your energy costs by up to 50%
• TCD’s HVAC Explorer makes it easy to access exclusive offers from preferred partners
Beyond upgrading your HVAC, there are additional ways to lower your energy costs and maximize savings around your home. Palmetto’s HVAC leases start at $99 per month and include 12 years of free maintenance.
You can also pair solar panels with your electric appliances to bring your utility bills down even further. TCD’s Solar Explorer helps you find the best system for your home and budget, with potential savings of up to $10,000.
Plus, the free Palmetto Home app lets you unlock up to $5,000 in rewards for home upgrades by completing simple challenges including reducing your energy use.
Get TCD’s free newsletters for easy tips to save more, waste less, and make smarter choices — and earn up to $5,000 toward clean upgrades in TCD’s exclusive Rewards Club.