In California’s Central Valley, choosing the best setup for the HVAC system in your two-story house is important. Most homeowners know how hot upstairs bedrooms can get during Modesto’s long, scorching summers. Living in a 209-area home has unique comfort demands compared to the average temperatures the rest of the nation experiences.
Not sure what your two-story home needs? Get a free HVAC assessment in Modesto, CA, from the family-owned and operated Loves Air to help you determine which system is best for you.
Key Summary:
- Two-story homes require a different approach to choosing the best HVAC setup, especially in California’s Central Valley, where the summer season is long and hot.
- The Loves Air family recommends several options, including single-system zoning, dual HVAC units, ductless mini-splits, and heat pumps with zoning capability for two-story homes.
- Homeowners should look for HVAC systems with high SEER2 ratings, zoned temperature control, and variable-speed blowers for two-story homes.
Why Two-Story Homes Need a Different HVAC Approach
At Loves Air, we know how hard Modesto-area AC systems work during our 100°F+ stretches, and it can be even more intense if you have a two-story home. These types of homes require a different approach to HVAC system installation and replacement. Here’s what to consider when selecting the right HVAC system for your two-story home:
- Heat rises: Warm air rises naturally while cold air sinks, causing the second floor of your home to get much hotter in the summer while the first floor stays cool.
- A single thermostat isn’t enough: Most homes have just one thermostat downstairs, and when that area reaches the desired temperature, the system shuts off before cooling the upstairs. Installing a second thermostat upstairs can help keep this part of the home cooler.
- Airflow issues: If your home has standard ductwork, it can’t always deliver balanced air to every room on both levels, creating hot spots and inadequate airflow that makes the upstairs feel hotter.
- Roof heat gain: Your roof absorbs a lot of sunlight, increasing the cooling load on the second floor, especially compared to the first floor.
Our Recommended HVAC Options for a Two-Story House
When it’s been over 100°F for a few days straight, your system works overtime to cool the upstairs of your two-story home. Our NATE-certified technicians take pride in helping Modesto homeowners choose the right equipment to stay comfortable year-round. Check out our recommendations for the most reliable HVAC for your two-story house here in the 209.
Single-system with zoning
A single-system with zoning is the most common HVAC setup in the Central Valley. This home comfort system features a central furnace or AC unit with motorized dampers installed inside your ductwork that can be opened or closed to control airflow.
A system with zoned operation gives you convenient zoned heating and cooling, letting you independently control the temperature in different areas of your home using a control panel and multiple thermostats. Choose this option to enjoy amazing, reliable comfort upstairs and downstairs, as well as improved efficiency for lower energy costs.
Dual HVAC units
Dual HVAC units give you independent temperature control for each floor, providing consistent, energy-efficient home comfort year-round. These systems are wonderful for two-story homes thanks to the separate temperature controls that get rid of those annoying hot and cold spots. In most cases, one unit handles the upstairs and the other unit handles the downstairs, so your entire home stays comfortable no matter what the Modesto weather brings.
Ductless mini-split systems
A ductless mini-split system is another excellent HVAC system option that includes zoned temperature control. These compact systems are great for two-story homes because they’re easy to install and require no ductwork. If you already have an HVAC system but your second floor feels hot, an energy-efficient ductless mini-split gives you more control over the temperature upstairs, even during Modesto’s sweltering summers.
Heat pump systems with zoning capability
A heat pump is another energy-saving option that provides heating and cooling in a single unit. These popular HVAC systems are even more effective in a two-story home if you have one with zoning capability.
Much like some of the other options we’ve mentioned, an upstairs-downstairs zoning setup lets you dial in cooler temperatures when you need them most, especially if you sleep upstairs or spend a lot of time on the second floor. There’s no need to roast in the summer heat if your HVAC system has the right features, like a heat pump with zoned control.
Do You Need Two HVAC Units in California?
You may wonder if you need two HVAC units in California, especially if you have a two-story home. Choosing this option is wise for homes with two floors, and it’s particularly beneficial for properties that are larger than the average single-family home. Installing two separate units provides ample cooling that fills the entire house, including the second floor. You might also want to consider dual HVAC units if your home has an open floor plan or gets a lot of sun exposure on one side.
What Size House Needs Two AC Units?
Homes around 2,500 to 3,500 square feet or larger typically require two AC units to keep the entire house cool. This definitely applies to two-story houses in this size range, where a single unit probably can’t maintain consistent temperatures on both floors. A single system may struggle to cool the upstairs of most large homes, while separate units offer better balance and temperature control you can count on. Even single-story Modesto homes that are 3,000 square feet or more can benefit from two AC units.
How To Choose the Right HVAC Setup for Your Two-Story Home
Now that you’re aware of your options, there are a few more things to consider when choosing the best HVAC setup for your two-story home:
- When possible, choose equipment with a variable speed blower that can push cooled air to the second floor more effectively.
- Have the in-house trained technicians at Loves Air perform a professional Manual J® load calculation to make sure your new system is properly sized.
- Select ENERGY STAR-certified equipment with high SEER2 ratings for optimal efficiency and maximum savings.
- Schedule a ductwork inspection to look for any gaps, holes, or damage, and make the necessary repairs so the cooled air flows evenly throughout your home, including the second floor.
- Make sure that the windows, doors, attic, and both floors of your home are adequately insulated to prevent air and energy loss.
- Consider more than just how many floors your home has, and remember to take the total square footage and layout into account before installing a new HVAC system.
Contact Loves Air and Put a Little Love in Your Home!
If you need a new HVAC system for your two-story home, you’ll see why Loves Air Heating, Air Conditioning, and Solar is the best in the Central Valley. There are bigger companies in our area, but not better companies, and we’re ready to help you choose the right HVAC system for your space. We’d like to welcome you to the Loves Air family, so get in touch with us to find out why you’ll love us, guaranteed!
