The Truth About Single-Stage HVAC Systems: Pros, Cons, and Costs
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Choosing the right HVAC system can affect your house’s environment more than you may realize. It directly affects comfort levels, energy bills, and the overall lifespan of your system. Energy Star reports that replacing your unit with Energy Star-certified equipment can reduce your annual bill by $140. With multiple types of units, it can get confusing picking out the right one for your Lexington, KY home.
HVAC comes in single-stage, two-stage, and variable-speed units. Each operates differently and offers different benefits depending on your home, budget, and comfort goals. We’ll break down each option to help you make a confident decision.
What Do “Stages” and “Variable Speed” Mean?
HVAC systems are categorized by how they operate.
- Single-stage systems run on one level. It’s either on or off.
- Two-stage systems have two settings and operate on low most of the time. It can run on high when needed.
- Variable-speed systems can adjust output to match your home’s exact needs.
Single-Stage HVAC Unit
A single-stage unit is a traditional HVAC unit that runs at 100% at all times. It’s also the most common. It’s either on or off, and the output will always remain 100% unless faulty.
Pros:
- Lower upfront cost
- Simple design
- Easy to repair
Cons:
- Less consistent temperatures indoors
- Higher energy usage
- More wear and tear due to frequent operation
- Louder
Best for:
Smaller homes in milder climates, rental properties, or homeowners on a tighter budget.
Two-Stage HVAC Unit
Two-stage units operate on two levels. It can run on low (most common) or run on high during extreme temperatures.
Pros:
- Better temperature control
- Energy efficient
- Quieter operation
- Reduced system cycling
Cons:
- Higher upfront cost
- Slightly more complex repairs
Best for:
Medium to large homes, homeowners wanting improved comfort, and areas with moderate temperature swings throughout the year.
Variable-Speed HVAC Systems
Variable speed HVAC systems continuously adjust output based on your home’s needs. It typically runs for longer durations but at lower speeds.
Pros:
- Superior comfort
- Highest energy efficiency ratings
- Quiet operation
- Reduced strain on the system
Cons:
- Highest upfront investment
- Requires professional installation
Best for:
Large homes or homes that experience a lot of hot/cold spots, high energy bills, or homeowners planning to stay in their home long-term.
Common Mistakes Homeowners Make
Deciding which unit type is right for you depends on the size of your home. Layout and insulation are equally important in figuring out which unit will perform better to avoid hot/cold spots. In Lexington, KY, our weather can be unpredictable. Having a unit that can handle 15-degree weather is equally important as one that can handle 90-degree weather. Pricing and how your unit may affect billing are other factors to consider.
Professionalism Installation Matters
An incorrectly sized system can lead to higher bills, uneven temperatures, and early system failure. It’s important to have an Apex Solutions professional help you decide which unit is right for your needs. Our technicians understand the importance of layout, house size, comfort needs, and load calculations. They understand how crucial proper installation is for the unit to run as efficiently as possible.
Call us at 859-365-2599 and schedule your HVAC evaluation today. Let our experienced technicians help you find the perfect solution for your home.