Can Two Thermostats Control One AC Unit?

Are HVAC thermostats interchangeable?

The devices most commonly called “smart thermostats”, such as thermostats from Nest, Ecobee, Honeywell, etc., are only compatible with “low voltage” 24v HVAC systems.

You should be certain that your HVAC is compatible before you try to hook up a smart thermostat.

Guide to low voltage, line voltage, and more..

Do I need 2 Nest thermostats for 2 zones?

1-2 of 2 Answers If you currently have two thermostats controlling two zones you will want two Nest thermostats. You do not need to upgrade them both at the same time.

How do I balance upstairs and downstairs thermostat?

Here’s what you do: set your upstairs thermostat to your desired temperature goals, and then set your downstairs unit to be two degrees warmer. For most homes, this naturally encourages at temperature balance that’s comfortable and right at your desired temperature goals.

Why does my AC work downstairs but not upstairs?

The most common complaint regarding imbalanced temps and HVAC units is that it cools the first floor, but not the second floor. Different temperatures on different floors of your home can signal an issue with how your air conditioning system works. In some cases, it’s because the system is outdated.

What size air conditioner do I need for a 3000 square foot house?

Furnace and Air Conditioner size for a semi-detached 2-storey homeSemi-detached House square footage *Furnace Output [BTU/hr]Air Conditioner size [ton]up to 1500 sq ft40,000 BTU/hrup to 2 ton1500 to 1800 sq ft50,000 BTU/hr2 ton1800 to 2200 sq ft55,000 BTU/hrup to 2.5 ton2200 to 3000 sq ft60,000 BTU/hr2.5 to 3 ton2 more rows•May 26, 2017

How much does it cost to install a zoned HVAC system?

HVAC Zoning System CostNumber of ZonesNew ConstructionExisting HomeTwo Zones$1,500 to $1,850$2,000 to $2,500Three Zones$1,850 to $2,100$2,200 to $2,850Four Zones$2,000 to $2,500$2,650 to $3,300Additional Zones$225 to $350 per zone$335 to $500 per zone

Is it better to have two AC units or one?

Two units allow for an easier time balancing the desired temperature in your home. Generally, one area of your home will be warmer or more difficult to cool than another. In a two-story home, the upstairs area is often warmer, as warm air rises. Having two AC units in your home can help balance out the temperature.

Can you add zones to an existing HVAC system?

Installing dampers inside your ducts is the most common way to add zones to an existing system. However, your blower can only operate at 100% capacity. … The zone calling for air will receive sufficient cooling for the associated space, and any excess air will enter the bypass duct.

Should I upgrade my thermostat?

Upgrading your thermostat can also help you avoid replacing air ducts, air conditioners, and furnaces. Replacing large HVAC equipment is much more costly than simply replacing your thermostat. In addition, a new thermostat will extend the lives of your HVAC products.

Can I replace my thermostat myself?

Why installing a thermostat is NOT a DIY project There are numerous variances when determining what may work for your HVAC system. … It is possible to save some money by installing or replacing your thermostat yourself, but you will need: Basic electrical knowledge.

Why does my house have 2 thermostats?

A single zoned system has many of the advantages of a two-unit system: The house is divided into two or more zones — in this case, upstairs and downstairs. Each zone of the house can be turned down or closed off to save energy. The thermostat in each zone controls the temperature in the zone.

How do you put an air conditioner in the second floor?

7 Ways to Cool Down Your Second FloorBlock the sun. Close blinds and shades to block light and UV rays. … Insulate and ventilate. … Reduce use of lights and appliances. … Change air filters. … Adjust the fan setting on your thermostat. … Create climate zones. … Fire up the fans. … Consider adding an extra HVAC system.

Can you have multiple thermostats?

As previously mentioned, homes with these heating systems typically have multiple thermostats and can have as many as one per room. Mysas allow you to control each thermostat individually, but also have the unique functionality of grouping thermostats together, easily creating individual heating zones.

Should thermostat be upstairs or downstairs?

Set an Upstairs and Downstairs Thermostat Most people think that running the upstairs and downstairs zones at the same temperature leads to better efficiency and results, but this isn’t true. Instead, set your upstairs thermostat to your ideal temperature and then your downstairs one two degrees warmer.

Why is it so hot upstairs but cold downstairs?

You Have Poor Attic Insulation, Leaking Air Ducts or Blocked Soffit Vents. Poor attic insulation, leaking air ducts and blocked soffit vents can also cause your home to have hot upstairs and cold downstairs.

How much does it cost to install a second AC unit?

The average cost of installing air conditioning is $1,000-$3,000. For a new ductless air conditioning system that covers about 2,000 square feet, homeowners can expect to pay an average of $2,500.

How do you get airflow to the second floor?

What Causes The Problem?Hot Air.Hot Roof.Ductwork, Insulation and Seals.Redirect airflow to the second floor.Change filters.Insulate and ventilate the attic.Insulate windows.Change the fan setting on your thermostat from “auto” to “on”

How much does it cost to install dual zone HVAC?

The cost of a dual zone system depends on your HVAC contractor, but a ballpark figure would be around $2,500-3,500 if it is done during an installation, depending on the size of your house and your area.