The most energy efficient way to heat a home is usually a properly sized, well-maintained modern system in a house that holds its heat. Heat pumps lead on efficiency, new high-efficiency furnaces and boilers are far better than old ones, and sealing, insulating and tuning up often lower your bill before you spend a dollar on new equipment. Here is how to sort out which of those fits your house, and how to lower your heating bills this winter.
We have been keeping New Mexico homes warm for over 38 years, in Albuquerque, Rio Rancho, Corrales and beyond. What follows is the same practical advice we give neighbors at the kitchen table.
TL;DR
- Heat pumps are among the most efficient ways to heat a home, delivering two to four times more heat energy than the electricity they use.
- Old furnaces and boilers can run at efficiencies as low as 56%, while new units reach almost 99%, so age matters as much as type.
- Air sealing, duct repair, a thermostat setback and a yearly tune-up are the cheapest ways to lower your bill.
- Correct sizing, done with a Manual J load calculation, matters as much as the efficiency rating on the box.
Table of Contents
- What "energy efficient" actually means for a heating system
- How the main heating options compare
- Start with the house, not the equipment
- How to lower your heating bills this winter
- Maintenance is part of efficiency
- Sizing and choosing the right system
- Our perspective
- Let us look at your heating system
- FAQ
- Sources
What "energy efficient" actually means for a heating system
Efficiency is a simple idea: how much usable heat you get for each unit of energy you pay for. A furnace or boiler with a 95% rating turns about 95 cents of every fuel dollar into heat in your home. A heat pump works differently. It moves heat rather than making it, so it can deliver more heat than the electricity it consumes. ENERGY STAR says that in winter a heat pump can deliver up to three times more heat energy than the electrical energy it uses, which is why it can cost less to run than furnaces, boilers or electric resistance heat.
That is the headline. But the number on the equipment is only half the story. Three things decide what you really pay:
- The equipment's efficiency. Older units lose a lot of fuel. Colorado State University Extension notes that heating is a big slice of the household budget: 54% of energy expenses for the average Colorado home go to space heating. The U.S. Department of Energy says heating can account for almost half of the average family's winter energy bill. Any improvement there is worth having.
- The house around it. The same extension notes that even average cold-climate homes need three times as much heat energy as well-insulated, low-leakage homes.
- How the system is sized, installed and maintained. A right-sized system that gets a yearly check will outperform a bigger, neglected one.
Our high desert climate, with cold mornings, big temperature swings and plenty of sunny winter days, makes all three worth a look.
How the main heating options compare
Here is a quick side-by-side of the systems homeowners ask about most, using only what the national research says.
| System | Efficiency picture | Where it shines |
|---|---|---|
| Heat pump | Delivers two to four times more heat energy than the electricity it consumes | Replacing baseboard electric heat, heating oil or propane; heating and cooling in one unit |
| High-efficiency furnace | New units reach almost 99% efficiency | Replacing an aging furnace in a home with existing ductwork |
| High-efficiency boiler | Same range as new furnaces; old boilers can be as low as 56% | Homes with radiant or hydronic heat, where steady, even warmth matters |
| Electric resistance (baseboard) | About twice the energy use of a heat pump, per the EPA | Small spaces and supplemental rooms |
The right choice depends on what you have now, what your ducts or pipes look like, and what fuel is available at your address. There is no single winner for every house, and that is why a walk-through matters.
Heat pumps: the efficiency leader
The EPA calls heat pumps one of the most energy-efficient ways to heat and cool a home, especially compared with homes heated by baseboard electric heat, heating oil or propane. A heat pump typically uses about half the energy of other electric heating sources.
The old worry was cold weather. The University of Maryland Extension points out that cold-climate heat pumps are designed to operate efficiently well below freezing, and many modern systems keep delivering heat below 0°F. The EPA's guidance for ENERGY STAR certified air source heat pumps says many new models excel at space heating even in the coldest climates, and recommends that homeowners where winter temperatures regularly dip below freezing talk to a contractor to choose a unit suited to their home.
The Department of Energy reports that research from two national laboratories found that for over 90% of American households assessed, replacing worn-out heating equipment with the right heat pump saves on energy bills. Savings are largest for homes using heating oil, propane or older electric equipment, and the same research says homes heating with natural gas can save as well.
One more detail worth knowing: the DOE's heat pump design guidance says supplemental heat is not always needed, but can cover defrost cycles or stretches of extreme cold lower than typical for your area. And for homes in areas with high fuel costs, EPA notes that a dual-fuel system lets you use a heat pump or a traditional furnace depending on cost.
High-efficiency furnaces and boilers
If your home already has ducts or a hydronic system, a new high-efficiency furnace or boiler can be a big step up. Colorado State University Extension reports that older furnaces and boilers can have efficiencies as low as 56%, while new ones achieve almost 99%. If your current unit is closer to the first number than the second, a good share of every heating dollar is going up the flue.
The Department of Energy suggests that if your heating or cooling system is over 15 years old, you can save on bills and improve efficiency by investing in new equipment. Boilers are a specialty of ours, and we cover the timing question in our guide on the best time to replace your home boiler.
Start with the house, not the equipment
Before you pick a new system, look at where the heat escapes. This is the part of home heating that quietly causes damage to your budget, month after month, with no noise and no warning light.
Seal the air leaks
The Department of Energy's Energy Saver guide says that sealing uncontrolled air leaks can save 10% to 20% on heating and cooling bills. The Montana Energy Savers Guidebook puts it another way: air leaks waste 10 to 25 percent of a home's heating energy. Common culprits are gaps around windows and doors, attic hatches, plumbing and wiring penetrations, and fireplace dampers left open.
Insulate, then fix the ducts
Insulation slows heat flow through your walls, attic and floors. The same DOE guide calls it essential for reducing heat flow through the building envelope.
Ducts deserve a special look. The Department of Energy says keeping ducts in good repair can prevent heat loss of up to 60% at the registers, and ENERGY STAR says sealing and insulating ducts, especially in attics or crawlspaces, can improve HVAC efficiency by as much as 10%.
Why this comes first
There is a bonus if an upgrade is on your horizon. The Department of Energy says envelope upgrades like insulation and air sealing can make a heat pump installation up to $3,700 less expensive, because a well-insulated home needs a smaller unit. Colorado State University Extension likewise says air sealing and insulation before a new system can reduce its size and cost and increase comfort.
How to lower your heating bills this winter
If your question is simply how to lower heating bills, these steps come first. Most cost little or nothing.
- Set the thermostat back. The DOE says you can save as much as 10% on heating and cooling by setting back your thermostat while you sleep and when you are away, roughly 1% on heating for each degree of setback over eight hours. The Montana guidebook adds that deeper setbacks can cut 20 percent or more, especially when you use both nighttime and daytime setbacks.
- Use the right thermostat for your system. If you have a heat pump, the DOE advises against setbacks unless you have a smart or programmable thermostat designed for heat pumps. Thermostat acting up? Our 15-minute thermostat troubleshooting guide walks through the common fixes.
- Check your filter monthly. ENERGY STAR recommends checking the air filter every month in heavy-use winter months and cleaning or replacing it if it is dirty. A clogged filter makes the system work harder for less warmth.
- Seal and insulate. See the section above. This is the biggest no-equipment win.
- Book a fall tune-up. More on that next.
- Mind the other hot-water and heating loads. Your water heater is a quiet energy user too. Simple water heater maintenance helps keep the whole house running efficiently through the cold months.
For a local take, see our post on lowering your winter heating bills in Rio Rancho.
Maintenance is part of efficiency
Think of your heating system as one of a team of hard workers in your home. Even the best worker slows down when no one checks in. The Department of Energy says a regular maintenance schedule can reduce heating and cooling costs by 10% or more and prolong the life of the equipment, and it recommends a professional HVAC technician inspect your systems, furnaces in the fall and air conditioners in the spring. ENERGY STAR gives the same timing: heating tune-up in the fall, cooling in the spring.
What does a good tune-up cover? That depends on the system, but our furnace maintenance checklist separates what you can do yourself from what to book with a licensed professional. If you have a boiler, the same fall visit is the time to get it checked before the first hard freeze.
It also pays to plan ahead for cooling. Many New Mexico homes run swamp coolers, and some homeowners are changing over to refrigerated air or a combined system. If that is on your list, our post on spring HVAC installation explains why scheduling early helps.
Sizing and choosing the right system
Bigger is not better. The Department of Energy says proper sizing is as important as efficiency, and oversized systems cost more to operate. Both the DOE and Colorado State University Extension say contractors should perform an ACCA Manual J calculation to size new or replacement equipment. The DOE's heat pump guidance goes further: accurate load calculations with approved software are critical for the heat pump to keep you comfortable efficiently all year.
When you compare options, weigh these factors, which Colorado State University Extension lists as the ones that drive the decision:
- Fuel availability at your address
- Upfront cost and operating cost
- Comfort
- Maintenance needs
- Safety and reliability
- Emissions
A quick way to frame it:
- Your heating equipment is under 15 years old and running well: focus on sealing, ducts, thermostat and tune-ups.
- It is over 15 years old, or repairs are piling up: it is time to price a replacement and ask for a load calculation.
- You also want better cooling: look at a combined heating and cooling plan so you buy once.
- You have hydronic heat: a boiler assessment is the right first call.
Our perspective
We see the same pattern every fall. A homeowner calls because the bill climbed or the house never quite warms up, and they assume the answer is a new system. Sometimes it is. Often the first win is a leaky duct, a dirty filter, a tired thermostat or a boiler that has gone years without a check.
That is why we start with a conversation, not a sales pitch. You reach a local expert directly, with no automated phone menu, and we talk through what you have, what it costs you to run and what would make the biggest difference. When equipment does need replacing, our licensed professionals handle the installation and leave your home clean when they go.
After more than 38 years in New Mexico, we know what our climate asks of a heating system. We design every recommendation around your house, your budget and your comfort, so the system you end up with is the right size and does the job for years.
Aaron Waller, General Manager
Let us look at your heating system
If your heating is not working, your bills keep climbing or your equipment is showing its age, we can help. We offer HVAC maintenance and installation, boiler installation and service, water heater repair and installation, and the plumbing services that keep the rest of your home running. Browse everything on our heating, plumbing and cooling services page, or contact us to book an appointment in Albuquerque, Rio Rancho or Corrales.
We keep our scheduling simple: you talk to a real person who knows the area, and you get a clear plan before any work starts.
FAQ
What is the most energy efficient heating system for a home?
For most homes, a heat pump is the most efficient option. The EPA says it typically uses about half the energy of other electric heating sources. A new high-efficiency furnace or boiler is also a big improvement over an old one, so the best fit depends on your ducts, fuel and house.
How can I lower my heating bill without buying new equipment?
Set your thermostat back while you sleep and when you are out, check your filter monthly, and seal air leaks and leaky ducts. The Department of Energy says sealing leaks can save 10% to 20% on heating and cooling. A fall tune-up from a licensed technician rounds out the list.
When should I replace my heating system instead of repairing it?
The Department of Energy notes that equipment over 15 years old is a good candidate for replacement savings. If repairs are frequent, the house is uneven in temperature or the bills keep rising, it is time to get an assessment. We can walk you through the options.
Do heat pumps work in cold weather?
Modern cold-climate models do. The University of Maryland Extension says many continue to provide heat below 0°F. The EPA recommends that homeowners where temperatures regularly dip below freezing talk to a contractor to choose a unit suited to their particular home.
Does insulation really make a difference?
Yes. Insulation and air sealing reduce how much heat your house needs, and the Department of Energy says they can make a heat pump up to $3,700 less expensive to install because a smaller unit is enough.
Sources
- Heat Pumps | US EPA
- Clean Heating and Cooling | ENERGY STAR
- Home Energy: Heat Pump | University of Maryland Extension
- Heating Colorado Homes | Colorado State University Extension
- For Most Americans, A Heat Pump Can Lower Bills Right Now | Department of Energy
- Home Energy Checklist | Department of Energy
- Save on Heating Costs with ENERGY STAR This Season
- Consumer Guide to Home Heating and Cooling | Department of Energy
- Energy Saver guide 2022 | Department of Energy
- Montana Energy Savers Guidebook 2024
- A Guide to Energy-Efficient Heating and Cooling | ENERGY STAR
- Consumer Messaging Guide for ENERGY STAR Certified Air Source Heat Pumps | EPA
- Decision Matrix and System Design Guide | Department of Energy
- Home Heating guide | Department of Energy
- Water heater maintenance: lower costs, fewer repairs