Browse Forums Building A New House 1 May 05, 2020 7:30 pm I am building a new single storey house and installing Gas Ducted Heating, doing all the insulations (wall & ceiling), double glazed windows etc. 1. But there are also Bathroom exhaust fans and Kitchen rangehood which are vented through the roof. I think these can cause heat loss. Please guide how to prevent/solve the heat loss due to these? Ideas/suggestions? 2. We thought to have a heating vent in our bathroom for cold days and a 3-in-one heat lamp combo (heat bulbs, light & mini exhaust) for when the gas ducted heating is off. There are heat lamps available without exhaust cans but my builder says they won't install it as it can overheat. This heat lamp combo won't' be vented through the roof. Can you please guide how to prevent heat loss through the heat lamp? Or suggest any other idea for the situation? Below is our bathroom plan. there is an exhaust fan above shower area, and exhaust fan with builtin light in the toilet. Ideas/suggestions? Like ⋅ Add a comment ⋅ Pin to Ideaboard ⋅ Read my first home build journey by clicking the following link Building with SJD Homes in 2020 - Charleston 310 Customised Re: Heat Loss Issue Through Exhaust Fans / Kitchen Rangehood 2May 06, 2020 8:35 am It's a very good question, as many houses these days have an open bathroom (ensuite) to the master bedroom, so if you are heating the bedroom, then the heat also goes to the ensuite. Generally in that situation (display houses for example), they don't have one of those heat lamps (probably for that heat loss reason). Kitchen range hoods are quite low down, as as heat rises, then the hot air will be trapped above the area of the range hood, so there is minimal heat loss there. Bathroom exhaust fans are usually the self-sealing variety these days, to get the 5, 6 or 7 star efficiency ratings that (some) builders are trying to achieve. We have those heat lamp/fan combos in our ensuite and bathrooms, but they all have doors, so you can heat the bedroom without losing heat (in our 20 year old house). You can use self-sealing exhaust fans, but you would need another source of heat to warm the room when the ducted heating is not running (generally, they don't install ducts in the wet areas). The exhaust fans are to ventilate the bathroom and remove steam, to minimise mould (bathrooms are not the most sunny rooms of the house after all). Some fans have moisture sensors also, so they start and stop automatically when moisture is detected. If the house is still in the design stage, maybe slab heating in the bathrooms (assuming concrete floor)? The heat lamps get very hot, and need to have air flow through them to let the heat escape. Maybe if you have an electrician friend and a plumber, add a metal tube to the top of the heat lamp tube, and fit a self-sealing exhaust fan to the top, that is wired to the heat lamps, so the fan is only on when the heating is used. Then when you use the ducted heating system, there is minimal heat loss through the heat lamp assembly? The old houses used to have a radiator strip on the wall above the mirror, they worked well also. Re: Heat Loss Issue Through Exhaust Fans / Kitchen Rangehood 4May 07, 2020 11:19 pm Hi Alex, my understanding is that you cannot run rangehood exhaust through an ERV, so if you have a powerful exhaust fan, you're dumping a lot of energy from indoors back outside There may be answers here but can't find anything. I have a closed in veranda, four windows. North facing, just had sunblock blinds installed. A bit cooler (actually… 0 8112 My home office is hot with computer equipment running virtually 18 hours a day. When it gets unbearably warm I simply step out of my door into the living area which is… 0 12011 I have had same ventair 2in1 383m cube dual switch fan and exhaust installed last week Not sure if it’s the best but my electrician said it is excellent 1 4926 |