Patching an Old HVAC System
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Patching an Old HVAC System

When I married my husband ten years ago, I reluctantly agreed to move into the older brick home he already owned. I knew the house was outdated. Unfortunately, I didn’t have any experience renovating an older place. Immediately, I noticed the old central air conditioning unit in the home. After thoroughly inspecting the equipment, I was afraid the ancient unit wouldn’t make it through my first summer in my new place. Thankfully, I was wrong. After ten years, this same air conditioning system is still running smoothly. However, it has received some diligent care from a reputable HVAC contractor over the years. On this blog, you will discover the ways an HVAC contractor can restore an older air conditioning unit.


Patching an Old HVAC System

Why Are Some Air Conditioners Installed On The Rooftops? And Other Frequently Asked Questions

Mary Gonzalez

You may have noticed that some homes have rooftop air conditioners and some homes don't. If you're in the market for an air conditioner installation and you're wondering whether a rooftop air conditioner would be right for your home, these answers to frequently asked questions may help you decide.

Why are some air conditioners installed on rooftops?

Cold air is denser than warm air, so it sinks. Compared to central air conditioners, rooftop air conditioners don't have to work as hard to circulate cold air throughout the house, because cold air produced on the roof naturally sinks down into the house and circulates through the ducts. Central air conditioners produce air from a place on the ground and must physically blow the air throughout the house to adequately cool it. This takes more energy, can result in increased operating costs, and can even contribute to the quicker degradation of the air conditioner's parts.

Are there any other benefits of rooftop air conditioners?

Rooftop air conditioners are different from central air conditioners because their parts are all located in one place. Central air conditioners have an outdoor component (the condenser) and an indoor component (a heat exchanger and fan located near the furnace). For rooftop air conditioners, all the parts are built and installed in one place as single package. This makes repairing rooftop air conditioners more convenient and generally less expensive.

Are there any downsides to rooftop air conditioners?

Rooftop air conditioners are heavier than central air conditioners, and because they have to be hauled up onto the roof of the house, they're more difficult to install than central air conditioners. In addition, rooftop air conditioners are only suitable for installation on roofs that are strong enough to support them. Roofs that have sustained water damage and other kinds of structural damage (like the kind of damage you would get from termites) are not good candidates for holding up rooftop air conditioners. In addition, installation costs of rooftop air conditioners can be double that of central air conditioners.

What should you do if you want to have an air conditioner installed on your roof?

If you would like a rooftop air conditioning installation for your home, have an HVAC professional come to your house. He or she will be able to inspect your roof and tell you if your home is a good candidate for a rooftop air conditioning unit. He or she will also be able to give you a price quote.