Warm NZ then take this estimate back to the client and once confirmation is received, a detailed design is undertaken by Rehau’s engineering team. This detailed design includes CAD drawings, hydraulic calculations, balancing and commissioning settings which can be attached to consent documentation, as well as providing a firm quote.
It’s a crucial process to ensure the product is installed in the manner in which it was designed to be utilised. It is when these designs aren’t being prepared that Sean and his team see jobs that have gone wrong and been installed without the required knowledge of the system and its requirements.
“Rehau is the pipeware manufacturer. This is their product and they have a team of engineers who work to provide accurate designs for installation of these systems,” Stephens says. “While going with the engineers’ designs is not necessarily the cheapest option, it ensures we get it right every time.” And provide the client with the cheapest running cost.
Underfloor heating runs from a heat source, either a gas boiler, diesel boiler or a heat pump, which heats the water to the desired temperature and sends it through the pipework installed in the floor – essentially turning the entire slab into an element of sorts.
If the floors are wooden, a diffusion plate is installed, which is an aluminium panel placed between the joists before the floor is laid. This panel has channels edged into it where the pipework is installed to heat the floor above.
Part of the initial planning and design phase for underfloor heating allows for clients to separate areas of a house or building into zones, which can then be operated separately with a programmable thermostat allowing controlled heating.
“We’ve seen underfloor heating growing in New Zealand consistently every year since we’ve been in the business,” Sean says. “People are realising it is a more sustainable heating option than many others, and its ongoing maintenance and operational costs are considerably less than other options because of its single heat source. But it has to done right and that’s something we’ve prided ourselves on. We’ve set our own benchmark and our own high levels of conduct and ethics within the industry.”
If you’re considering underfloor heating as a heat source for your next project, give the Warm NZ team a call to find out more.