Whilst your heating, ventilation air conditioning (HVAC) boiler is part of your climate control system, it is still a plumbing unit. Like any appliance dealing with water and/or gas, you may need a plumber rather than a HVAC engineer (although many perform both roles).
Boilers differ to furnaces in that they heat water to be distributed around a building, rather than the warm air forced into rooms. There are a huge boiler range on the market and here at Direct Brand we have a wide choice from leading brands such as Slantfin and Rand And Reardon.
When it comes to choosing one, with such a wide choice available, there are a few key things to consider:
Fuel Source - If an existing boiler is being replaced you will need to establish what fuel source is currently in use.
Gas boilers run off natural gas, which is the most common fuel used, pumped to the building from a gas utility main for which you will be billed monthly. Natural gas is not available in all areas and you may use the next most popular option, Liquid Propane (LP). LP is stored in a tank and generally delivered a few times a year. LP systems are often able to be used with natural gas too.Fuel oil is the least common fuel source. Boiler oil systems consist of oil being delivered to the home in bulk and stored in a tank, which may be underground or hidden away.
Steam Or Water - Older HVAC systems in some regions may use steam rather than water. They tend to feature cast iron radiators with attached air vents. More common in modern systems is the heated water system.
Venting - Not all appliances are vented the same way. Some are designed for each method of venting, whether through a lined existing chimney, or routing new venting to increase options for installation of different styles.
Size - Whilst a larger, higher capacity boiler may seem to be the best option, it may in fact have a negative impact on efficiency and it’s lifespan, as well as other components of your HVAC system. Your plumber or engineer should be able to advice on an appropriate BTU (British Thermal Unit) rated appliance to suit your needs.
Your boiler may develop faults as it ages and sometimes these may be the sign that its days are numbered. Installing the correct appliance for the task and having it regularly serviced should get the maximum life out of your system.
Signs that the appliance is struggling include: Cold or lukewarm water, drips or leaks, banging or gurgling noises, the pilot light going out, pressure dropping and thermostats malfunctioning. This is a far from an exhaustive list, at the first sign of a problem, requesting a call out from a heating engineer may save the system from a terminal failure.
Rest assured, whether you are installing a new system or replacing an old one, our support team are always on hand to offer advice about choosing from our range of quality HVAC boilers.