air source heat pump

  1. jamespipe

    Fixed head Vs VRF (Variable Refrigerant Flow) Split System Aircon

    Can anyone explain what the actual difference is between the fixed & VRF split system air conditioning system? Which is more energy efficient, and what is the actual difference? For comparison: 1. Midea MDV-V200WNW1 VRF (21kw heat, 15.5kw cool) 2. Midea MULMI0618B Fixed Head (20.5kw heat...
  2. F

    Wilo Para heating flow

    Hi All ,new here. I have an air to water heating pump and wondering what settings should I choose on the flow control device. The options are: - Variable differential pressure - Constant differential pressure - Constant I have a mixed heating system with underfloor heating downstairs and...
  3. hellopaul2

    Reliability of online demand / kVA calculator

    Hello, I'm in the process of getting a new electrical supply from UK Power Networks for my 4-bed, ~200sq.m barn conversion (not started yet!) and they're asking for a kVA rating. I'm planning to use an air source heat pump (maybe 12kW - 16kW output) and probably also one car charging point...
  4. anonfool72

    Air source heat pump keeps tripping rcd

    Hi all, Sorry if this is the wrong sub forum to ask. Our heating system started tripping the rcd. Do we need to call an electrician or a heating engineer to have a look? The sequence of events is: turn on the rcd, control units light up, after a second trips the rcd. Its a air source heat pump...
  5. B

    MCS Noise Calc for Air Source Heat Pump

    Hi, I need to estimate the noise level for an air source heat pump and understand there is a calculator published by MCS, especially for planning standards. Would any specialists be kind enough to give me a steer to these resources? I understand this is an Excel sheet but I've not been able to...
  6. R

    ASHP installation / mount point and draingage

    I'm installing a 16kw air source heat pump next week, and need to put in a spot to anchor it. I'm wondering if people can comment on how they've installed them and what has worked? I'm aware this ASHP will put off a lot of water (60-100l a day) and there's an inlet for sewer/waste water (it's a...
  7. I

    Part of work completed before Planning approval

    My original plan was to install 3x air conditioning units (air to air heat pump) after nearly running out of oil at the peak of winter with the added benefit of cooling. I had already run this past my neighbours and these outdoor units are not going to be visible from their property, and our...
  8. T

    Replacing an oil system hopefully with something 'green', too many options, advice please.

    We've recently moved to a 1960 bungalow. Reasonably insulated, double glazed, retrofitted cavity wall insulation, fair loft insulation. The house has a modern (2009) large extension, feels well insulated but with lots of glass and rooflights. The extension has underfloor heating, everywhere else...
  9. D

    Air source heat pump. RHI government scheme.

    Evening all. I have enquired about having a air source heat pump fitted after seeing adverts on social media. Very sceptical. I have a solid brick detached property with no cavity. Wooden windows. Poor insulation. They said I’d benefit massively from the RHI scheme due to these reasons...
  10. R

    UFH and heat loss calcs show insufficient heat

    Have started renovating our house. We will be removing our LPG gas tank and ancient boiler to be replaced with an Air Source Heat Pump. As part of the renovations we'll be adding insulation in the roof, floors, walls, and doubling glazing windows. The company installing the ASHP have run a heat...
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