In Boise, Idaho, summers get hot, reaching into the high 80s and low 90s, making air conditioners a big part of keeping your home comfortable. But what about the shoulder season, when it’s warm and you don’t need to blast the AC at 100% to stay comfortable? The answer is a variable-speed AC unit.
At Express Plumbing, Heating, and Air, we’re your local Boise-area HVAC experts. If you’re looking to replace your AC motor or get an entirely new air conditioner, our team will help you find the right unit for your home comfort needs.
What Is a Variable-Speed AC Unit?
A variable-speed air conditioner has multiple levels of cooling output, so it doesn’t have to run at full capacity all the time. This gives you better control over the temperature in your home and uses less energy at the same time.
How it works
The compressor in a variable-speed air conditioner has speed modulation, allowing it to adjust its cooling output based on need. This differs from single-stage (off/on) or two-stage systems (off/high/low) because it can run anywhere from 25% capacity to 100% capacity, reaching your desired temperature faster and more energy-efficiently.
Key features of variable-speed technology
Variable-speed technology allows for continuous operation and low power. New models have smart temperature and humidity sensors, operate quietly, and provide excellent air circulation.
Benefits of a Variable-Speed AC Upgrade
Here are some of the top benefits of choosing an air conditioner with variable speed vs. a single-speed AC.
Better energy efficiency and lower bills
Because they don’t have to run at full power, turning on and off until your desired temperature is met, variable-speed air conditioners are much more energy efficient. They use less power and cost you less on your energy bills.
More consistent indoor comfort
Another benefit of variable-speed ACs is their consistency, thanks to their consistent low-speed options. They cool the home more evenly, with fewer temperature swings. You’ll also notice improved airflow and humidity control.
Quieter operation
Variable-speed air conditioners are typically quieter when turned on, especially at lower speeds, making them ideal for bedrooms and open-concept spaces.
Extended equipment lifespan
Variable-speed ACs don’t need to cycle on and off as frequently as single- or two-speed systems, so they endure less wear and tear, require fewer repairs, and have a longer system life as a result.
Comparing Variable-Speed to Other AC Units
Variable-speed air conditioners differ from other types of ACs in a few key ways.
Single-stage vs. two-stage vs. variable-speed
Because single-stage air conditioners only have the option to run at 100%, and two-stage units only have high and low settings, variable-speed units offer better cooling performance, less energy usage, and lower lifetime costs in repairs and maintenance. They may be more expensive in upfront costs, but the savings in energy bills and repairs make them worthwhile investments.
Is a variable-speed unit right for your home size and climate?
A variable-speed AC is a good choice for a large house, offering efficient operation and even cooling. A smaller home may not require as much precise control, making a single- or dual-stage unit a less expensive option.
Idaho’s climate includes freezing temperatures in the winter, rainy springs that gradually rise to hot summer temperatures, and warm early fall weather that slowly declines back to winter. A variable-speed AC makes sense in this range of seasonal changes, allowing you to make incremental adjustments as your needs change over the year.
What To Know Before Upgrading
The following are some considerations before your new AC installation or replacement.
Compatibility with your existing system
The system needs to fit your current design, with properly sized ductwork for maximum cooling efficiency. You’ll likely need a new thermostat designed to work with your specific AC model, controlling HVAC operation directly.
Cost to upgrade and long-term return on investment
The average installation cost for a variable-speed AC (with labor, permits, and materials) ranges from $17,000 to $26,000. The total cost depends on your current setup and the work involved.
It’s estimated that a high-efficiency HVAC system will save the average Idaho household over $800 per year, which adds up to significant savings over the unit’s 10- to 20-year lifespan.
Are rebates or incentives available?
If you upgrade your HVAC system, you may be eligible for utility company or federal tax credits if you opt for a unit with a high SEER2 rating. These types of incentives will offset the cost of your upgrade and give you a financial break during tax season.
When Is the Right Time To Upgrade Your AC Unit?
Some of the best times to upgrade your air conditioner are when it’s reaching the end of its useful life or when you’re already remodeling your home.
Signs your current system may be outdated
Air conditioners typically last 10 to 15 years, so if your current system is over a decade old, it might be time for a replacement. This is especially true if you notice rising energy bills when the AC is turned on or if it’s not cooling your home consistently anymore, even with proper maintenance.
Should you upgrade during a remodel or HVAC replacement?
If you’re already replacing parts of your HVAC system or remodeling your home, adding an AC upgrade is a great idea, especially if you’re replacing the furnace. Working together, a new furnace and air conditioner will increase your home’s efficiency, and by combining the work into one job, you’ll save on labor costs.
Contact Express Plumbing, Heating, and Air Today
Whether you’re ready for a whole HVAC upgrade or you’re simply considering your options, contact Express Plumbing, Heating, and Air now to learn more. Call us at (208) 598-7081 or use our online form, and we’ll get back to you right away. We serve the greater Boise area with pride.
Frequently Asked Questions
How quiet is a variable-speed AC compared to a standard unit?
Variable-speed air conditioners are significantly quieter than standard single-speed units. Instead of turning on at full blast, they gradually ramp up to the needed speed, eliminating the loud “kick” sound. They also run at lower fan speeds most of the time, reducing overall noise during operation.
Can I use a smart thermostat with a variable-speed AC?
Yes, but it’s important to choose a smart thermostat compatible with your specific variable-speed system. Some models are designed to work with advanced HVAC features like multi-stage or variable-speed operation, so check the manufacturer’s recommendations before installing.
Are variable-speed AC units more reliable or do they need more maintenance?
Variable-speed ACs are more reliable and need less maintenance than other air conditioner types because they operate more consistently, with fewer starts and stops, resulting in less wear and tear.
