The Air Conditioner is my Heater?!

Air Conditioners don’t necessarily just cool your building. An air conditioner essentially moves heat from one place to another. In the case of your typical AC set up, we absorb the heat in your office and we put it outside with a gigantic condenser coil. What if we did the opposite?   Air Conditioning the Outside Speaking in terms of pure-physics, there’s pretty much always heat outside. To us living, breathing creatures, 0 degrees may seem like there is no-heat, but to a physicist, that’s orders of magnitude above the coldest cold possible “absolute zero.” That means we can put that ‘heat’ to use. In a configuration like this, the outdoor coil will become incredibly cold. This will allow it to absorb heat from the outside air and bring it indoors. Inside, the refrigerant is condensed and we basically get heat. We’re literally switching the roles of a traditional air conditioner. Systems such as this are often called Heat Pumps. Technically speaking, anything that moves warmth is a heat-pump, even an air conditioner or a fridge, but the term in particular is related to using air conditioning hardware for heating purposes.   The Extra Hardware Achieving this requires some special tweaks. If we’re going to have an air-conditioning-heater, we need some extra valves, control logic, and tweaking the design of your coils. Your coils will now both be able to function as evaporator and condenser coils. There’ll be two expansion […]

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Rooftop vs. Roof Mounted Systems

When we say “roof top air conditioner,” your first thought is probably any old machine bolted to the roof and blasting air into your building. This is only partially correct. There are specialist systems designed to be roof mounted and regular systems which simply can be roof mounted. The difference is sort of like a big rig versus a regular pick up. They’re both trucks and both can haul a trailer, but only one of them was built to only haul trailers for it’s entire service life. Roof Top Units The easiest way to think of these is as a packaged system. A roof top unit is a fully self contained air conditioner and heating system, in one mass of hardware, that will blast air of an arbitrary temperature into your ductwork. In some ways this makes things easier. You don’t need to have separate systems, you have a single, bolt in system that does all the work in one place. Units like this take advantage of being pre-assembled at the factory. Everything about them is optimized from the start for the best possible performance. There can be tighter tolerances in assembly because it was all built at the factory. It’s also likely to never be seen by a customer, being tucked away on the roof, it won’t take up indoor space either, except for the duct work. It’s a really attractive idea for a business to consider. There are […]

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