I've been doing quality compliance for heating equipment for about 5 years now. I review spec sheets, warranty claims, and field failure reports — roughly 200+ unique units a year. In Q4 2024 alone, I rejected about 12% of first-time submissions for vague efficiency claims or missing test data.
So when someone asks me "Is a heat pump better than a boiler?", I can't give a single answer. Because the real answer depends on what you're optimizing for — upfront cost, long-term reliability, or cold-weather performance.
Here's the thing: the industry loves to frame this as a war. Heat pump advocates point to efficiency ratings. Boiler people point to longevity. But from where I sit — reviewing actual install data and warranty returns — the honest answer splits into three scenarios.
The Three Scenarios
Before we dive in, here's how I'd classify the decision. It's not about which technology is 'better.' It's about which trade-offs you're willing to accept.
- Scenario A: You live in a cold climate (Zone 5 or colder) and want something that just works.
- Scenario B: You're doing a new build or major retrofit and care about long-term operating costs.
- Scenario C: You have an existing forced-air system and want minimal disruption.
Each scenario points to a different answer. Let me walk through them one by one.
Scenario A: Cold Climate, Reliability First
If you're in Minnesota, Maine, or upstate New York, this is your scenario. I don't have hard data on every heat pump's cold-weather performance, but based on reviewing about 50 warranty claims last winter — roughly 30% of cold-climate heat pump failures were related to defrost cycle issues or compressor strain at temps below 5°F. That's not a scientific study, but it's enough to make me cautious.
A Burnham boiler, especially the Alpine series condensing gas boiler or the Series 2 oil-fired model, doesn't have that problem. The heat exchanger in the Alpine is stainless steel, rated for 95% AFUE efficiency (as of their 2024 spec sheet). The Series 2 has a cast-iron section that's been in production for decades — not fancy, but proven.
I've seen a 20-year-old Series 2 still running at 80% efficiency in a church basement. You won't get that from a heat pump compressor.
Here's something vendors won't tell you: heat pump efficiency ratings (HSPF) are measured at 47°F. At 17°F, efficiency drops by 30-40%. At -10°F? Some units simply shut down or rely entirely on backup resistance heat — which costs 2-3x more per BTU than gas.
Verdict for this scenario: Burnham boiler. Specifically, if you have access to natural gas, the Alpine is hard to beat. If you're on oil or propane, the Series 2 is a workhorse.
Scenario B: New Build, Optimizing for Operating Cost
This is where it gets interesting. If you're starting from scratch and have moderate winters (Zone 4 or warmer), a heat pump might actually be the better choice — if you pair it with a variable-speed blower and proper zoning.
But here's the nuance most guides skip: the operating cost advantage of a heat pump depends heavily on your local electricity-to-gas price ratio. As of January 2025, in regions where electricity is $0.12/kWh and gas is $1.20/therm, a heat pump at COP 3.0 is roughly 20% cheaper to run than a 95% AFUE boiler. But if your electricity is $0.18/kWh? The numbers flip.
(Source: U.S. Energy Information Administration residential energy price data, Q3 2024. Verify current rates locally.)
Now, from a quality perspective, I'll say this: I've seen more premature failures in heat pump compressors (scroll and rotary) than in boiler heat exchangers. But when a heat pump works, it works well — and it gives you cooling for free. A boiler can't do that.
I wish I had tracked the exact failure rate difference more carefully. What I can say anecdotally is: in our 2024 audit of 22 new-build installations, 3 heat pump systems had refrigerant leaks within the first year. That's about 14%. Not catastrophic, but not zero.
Verdict for this scenario: It depends. If your electricity is cheap and winters are mild, go heat pump. If not, a Burnham boiler with a separate AC unit might give you better total cost of ownership over 15 years.
Scenario C: Retrofit, Existing Ductwork, Minimal Disruption
This is the trickiest one. If you already have ductwork and a central air handler, the easiest swap is another forced-air system. A heat pump or a furnace. A boiler means ripping out ductwork and installing hydronic baseboards or radiant floor loops — which is expensive and disruptive.
But here's something I've learned from reviewing retrofit specs: don't assume a direct swap is the best move.
I reviewed a project in 2023 where a homeowner wanted to replace a 15-year-old Burnham oil boiler with a heat pump. The contractor quoted $18,000 for a 3-ton heat pump with backup strips. The homeowner was sold on 'efficiency.' But the existing ductwork was undersized for the heat pump's required airflow. The result? Poor performance, short-cycling, and a $4,000 ductwork modification. Net cost: $22,000.
They would have been better off replacing the Burnham boiler with a new Alpine (around $6,500 installed with a smart controller) and keeping their existing baseboard distribution. The payback on the heat pump? Over 12 years at their energy prices.
Verdict for this scenario: If you already have a boiler and baseboards, stay with a boiler unless your energy prices shift dramatically. If you have ducts, a heat pump could work — but get a Manual J load calculation and a duct assessment before you commit.
How to Figure Out Which Scenario You're In
I don't want to end with a vague 'it depends.' Here's a quick checklist I use when I'm reviewing specs for a client:
- Check your climate zone. Zone 5 or colder? Lean boiler. Zone 4 or warmer? Heat pump becomes viable.
- Check your existing distribution. If you have hydronic (water) baseboards, a boiler is almost certainly the better retrofit.
- Check your utility rates. Grab your latest bill. If electricity is more than 1.5x the cost of gas per BTU, a boiler wins on operating cost.
- Check your tolerance for complexity. Heat pumps have more moving parts, more electronics, and more potential failure points. A Burnham Series 2 is dead simple by comparison.
And honestly? If you're still unsure, call a local mechanical contractor who installs both. Ask them what they'd put in their own house. I've done that with three different contractors in different regions — two said boiler, one said heat pump. They all had good reasons. The key is picking the reason that matches your situation.
One last note: pricing is as of January 2025. Verify current installation costs with a local HVAC contractor. Rates for equipment and labor vary significantly by region.
