Professional HVAC Contractors in Plymouth

It is highly unlikely. You are more likely to catch it from a shower head in a hotel room that has not been used for a long time. But, Legionella can be caught from the aerosol spray of infected cooling towers of larger, older and poorly maintained air conditioning systems. For further information on Legionella, please see our case studies section.

Many reasons, the simplest being that you may have inadvertently set it to fan only operation. Unfortunately it may also indicate a serious fault, Check your operating instructions but if you have no luck, give us a call on 01962 841366 (Winchester) or 01752 769000 (Plymouth).

A heat pump is a machine that by reversing its refrigeration cycle can provide heating instead of cooling. Because a heat pump uses a refrigerant it can upgrade the heat in air at even -15C to a usable heat source to heat buildings. Difficult to understand perhaps but imagine a domestic fridge or freezer, reverse its cycle and that black grille on the back will be very cold whilst inside will be very hot. Heat pumps can extract heat from air and water and are nearly always used to both heat and cool a building very efficiently and economically.

An electrical inverter is used to vary the frequency of the power supply from a normal UK 50Hz enabling fine step speed control of motors (compressors) this in turn varies the quantity of refrigerant delivered and hence variable cooling or heating capacity. Essentially, an inverter is a power speed control. Rather than throwing a lot of power into the system when it is switched on and the room cooling down or heating up suddenly, an inverter will slowly build up the power meaning you can comfortably cool or heat the room gradually.

Energy efficiency ratio is used to express the relative efficiency of a heating or cooling device by dividing the heat output by the power input. The higher the ratio compared to others, the better the system is.