Can swimming pool heat pumps be installed indoors is a common question for both high end domestic and commercial swimming pool owners.

To Toyesi the answer is an Easy “Absolutely”

However, well over 90% of all heat pumps suppliers and importers provide systems only designed for outdoors. That is with prop-fans.  These fans work incredibly well outdoors where air is free to move around.

Heat pumps take energy from the air being passed through the coil by the fan. this energy is then used to heat the pool water. The net result on the air moving through the heat pump is that it drops by up to 10 degrees cooler than the entering air. Outdoors this air dissipates with the wind and is replaced by fresh warmer air. However, in an indoor situation this air will cool the room down and circulated this now cooled air cooling it even more.

When used in an indoor situation, where air movement is restricted, the heat pump will begin to struggle, reduce in performance and even freeze up.

To over come this many companies may say yes to  indoor installations, and jerry-rig a solution, often without any real understanding of indoor installation requirements or any consequences of this practice.

To understand the how, why and what is going on Visit. How Heat Pumps Work

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Prop-fans are ideal for free moving outdoor air movement. When used in an implant operation, they do not handle the higher pressures of pushing air through a duct system. This means they they struggle with the back pressure and reduce the overall performance of the heat pump and wear out quicker. They are also prone to burn out fan motors faster.

For an indoor or implant installation we remove the prop-fan, and replace it with a high static fan upgrade kit. These fans are chosen as they are ideal to handle the static losses of air intake and exhaust ducting.

This is necessary to ensure integrity of the heat pump’s heating capacity and operating efficiency by not only handling the back pressure of a ducted system, they are designed for it.

Since you will be ducting the cooler air out of the room, you will next have to make sure you have the space available. The size of the heat pump will directly effect how big this outlet will need to be.

For example:

• a 25 kW heat pump may require 450 mm x 450 mm exhaust duct outlet.
• A large 60 kW system may require around 600 mm x 600 mm exhaust duct outlet.

Since you will be ducting the cooler air out of the room, you will next have to make sure you have the space available. The size of the heat pump will directly effect how big this outlet will need to be.

For example:

• a 25 kW heat pump may require 450 mm x 450 mm exhaust duct outlet.
• A large 60 kW system may require around 600 mm x 600 mm exhaust duct outlet.

When it comes to duct exhausts there are many choices from egg create grills, weather grills, fire ratted and custom designs.

We also can use solid metal ducting or our 4Zero Fire rating insulated flexi-duct.

Now you are looking to install the heat pump indoors, you now need to make sure the heat pump has access to new air intake. Since you are ducting the air out of the room, you will create a vacuum effect in the space.

To prevent this from happening you will require to also make room for adequate air flow into the plant room.

In a large space this may be easy, as their may be natural air ingress into the space. For example a car park.

However in other plat room applications, just like the air discharge, you may need to find a suitable wall location for an air intake grill. These can be in the wall, room, or even a door. And just like discharge air, the size of these will vary pending the size of the heat pump being used. The large the heat pump, the more air flow required, the larger the air intake will need to be.

There are many considerations when installing a heat pump, and even more when installing one in a plant room. These must be taken into account if you want a successful long term and problem free set up. Yes a jerry-rigged system may suffice and do you job. But without proper planing and design know how, you may be destined for long term pain.

Toyesi has been installing heat pumps for over 30 years, and implant heat pumps is our specialty.

We understand that some plant rooms have site restrictions, and a top discharge system may not suit, and an end or front discharge may be required. We know that the air intake and exhaust should be both set high on the wall if possible, and not close together. And many many more potential problems that may occur.

If you are serious about an indoor heat pumps and asking yourself “Can swimming pool heat pumps be installed indoors”, we suggest you call us first have have the job done right, or at least gain the best advice.

Sample collection of Toyesi & Trident Heat Pumps and Chillers..

If you want to now how Toyesi can help you and your water or pool heating project increase energy efficiency, reduce running costs or minimise your waste energy then give us a call.

Contact us on Facebook, phone: 02  9679 9400 or by email info@toyesi.com.au and we can discuss how we can best assist you in your projects. Alternatively download a company brochure