airconditioning

ProBreeze portable air conditioner review

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A photo of our ProBreeze portable air conditioner

Phew, it’s been a bit warm, hasn’t it? I was planning to write this review in a few weeks time, but seeing as we’re experiencing a heatwave in England right now, I’ve brought it forward in case you’re considering purchasing an air conditioner yourself.

Earlier this year, we bought a ProBreeze 4-in-1 portable smart air conditioner, and this week, it’s finally been warm enough to put it through its paces for a review. We went with this model as it was a Which Best Buy, and relatively cheap – £250 for refurbished model direct from ProBreeze. Also, I was able to pay for it in three instalments using Klarna, so I’ve actually only just finished paying for it. It’s available from Amazon (sponsored link), but unsurprisingly appears to have sold out.

There are cheaper models from other manufacturers – Terence Eden reviewed this one which cost him about £160 in March.

Setting it up

For an air conditioner to work correctly, you need to be able to pump the hot air out of the room. So, the air conditioner comes with a chonky hose, that you can poke out of a window.

However, to stop the hot air from coming back in again through the open window, there’s a window sealing kit included. This consists of a series of sticky-backed velcro strips, that you attach to your window and frame, and a membrane with velcro edges and a zip with which to make a hole for the exhaust hose to poke through. There’s also a more rigid plastic slidy thing for use with sash windows, if you want to pretend you live in Ecuador.

Part of the reason why I’ve not written this review until now is because the provided hose wasn’t long enough to reach the opening of our window. Our house is at least 100 years old, with nice big windows, and when the previous owners had double glazing installed, they insisted on windows which opened at the top. I ended up buying a longer hose, and some additional velcro strips, from AliExpress to reach the window.

Taking the sealing kit off and on again is a bit of a faff, to be honest. We’ll be leaving it on until the weather’s due to get cooler again on Sunday.

Using the air conditioner

I’m going to cover the disadvantages first:

  • It’s quite noisy
  • It’s more expensive to run than a fan

However, it did manage to cool our bedroom down very quickly. We’ve been using it in the evenings, and then switching it off at bedtime. I don’t think we would want it on all night due to the noise.

In terms of the cost of running, expect to spend 20-30 pence per hour to run it. As we’re a day away from the Summer Solstice, we still had sunlight late into the evening last night and so it didn’t actually cost us anything (thank you, solar panels and battery) other than reduced export.

You should also plug it directly into the wall, where possible, and not use extension leads. Because it draws a lot of power, you risk damaging your plugs and/or causing a fire with extension leads. Which would be terrible and also an incredibly ironic way to lose your house, seeing as an air conditioner is supposed to cool it down and not set fire to it.

Hello Tuya, my old frenemy

The ProBreeze air conditioner we bought is also a smart appliance. So although you can control it using buttons on the front, and the included remote control, it can also be controlled using an app or Google Assistant and Alexa.

However, the app in question is Tuya’s Smart Life app. Regular readers will know that I’m not Tuya’s biggest fan (pun not intended) but it seems to work okay, and easily integrates with Home Assistant through the official Tuya integration.

Maybe in future I can take it apart and flash the chip with something else to use it locally, but seeing as I’ve only just finished paying for it, I’ll leave it be for now.

The other three functions

I mentioned that it’s a four in one device. As well as air conditioning, this ProBreeze device can also act as a dehumidifier, and as a simple fan without a cooling mode. I think the fourth mode is a quieter ‘sleep’ mode for use at night. It’s still quite noisy in fan mode, even when it’s not actively trying to cool the air in your room. I believe it’s now branded as a ‘three-in-one’ device.

How it compares to a fan

A simple fan may cool you down, by blowing sweat away from your skin, but it doesn’t actually cool down the air in the room. That’s where air conditioning and air cooling devices come in. Air coolers are usually simpler and cheaper, whereas air conditioning units are more powerful.

Air conditioning at home is still something of a novelty to Brits. We’re not used to hot weather, and our homes are usually designed to retain heat to get us through cold winters. An air conditioning device is therefore unlikely to get much use all year round, but it’s made a difference over these past few days. I’ve glad we’ve bought one – even if it is a bit expensive to run, noisy and a faff to set up the window sealing kit. Anything for a good’s night sleep.

A temperature-controlled fan using Generic Thermostat in Home Assistant

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A screenshot of the description of the generic thermostat integration in Home Assistant

So earlier this month, in my review of the ThermoPro Bluetooth Thermometer, I mentioned some ‘additional functionality’ in Home Assistant that I would write about. Well, later is now, and I’m going to talk about how I have a temperature-controlled fan in our bedroom, powered by Home Assistant and its Generic Thermostat integration.

Generic Thermostat is one of the older Home Assistant integrations, having been around for several years. It allows you to take any temperature sensor, and any smart switch, and automatically turn the switch on and off in response to temperature fluctuations. In essence, Home Assistant itself provides the thermostat functionality.

The switch should power something that can either heat up or cool down a space – for example, a plug-in heater, or an air-conditioning unit. In my case, I’ve hooked it up to a standard pedestal fan, and used a smart socket to turn the fan on or off at the plug.

Enabling the integration

Note: within days of publishing this blog post, Home Assistant 2024.7.1 was released, which allows you to configure the Generic Thermostat through the Lovelace UI, so you don’t need to add the YAML code anymore.

I mentioned that it’s an old integration, and sadly it’s not one that has been updated much since it was implemented. This means that you can’t add it using the Home Assistant interface (Lovelace), and instead you’ll need to add it to your configuration.yaml file.

Here’s mine:

# Generic thermostat
climate:
  - platform: generic_thermostat
    name: Bedroom thermostat
    heater: switch.bedroom_fan_socket
    target_sensor: sensor.tp357s_55ab_temperature
    min_temp: 15
    max_temp: 30
    ac_mode: true
    target_temp: 19
    cold_tolerance: 0.5
    hot_tolerance: 0.5
    min_cycle_duration:
      minutes: 20
    away_temp: 19
    precision: 0.1

Here’s what each variable refers to:

  • Platform specifies the integration, and the Name is the friendly name of the device.
  • Heater is the name of the entity that controls the smart socket that the fan is attached to.
  • Target_sensor is the name of the thermostat entity that provides the temperature.
  • Min_temp and Max_temp set the minimum and maximum temperatures that you’ll see on the Climate card in Lovelace – I’ve set these to 15°C and 30°C respectively.
  • AC_mode is set to ‘true’ because we’re using a device that’s supposed to cool down the room. If this were a heater, I would leave this line out.
  • Target_temp is the temperature that I want the thermostat to achieve, which is 19°C.
  • Cold_tolerance and Hot_tolerance mean that Home Assistant will only turn on the fan when the room reaches 19.5°C, and will only turn it off when it reaches 18.5°C.
  • Min_cycle_duration means that if Home Assistant turns the fan on, it should stay on for at least 20 minutes, and vice-versa, so it’s not constantly cycling on and off.
  • Precision is how much precision I want when setting the temperature; at 0.1, this means I can set it to 1/10th a degree.

Once you’ve added or amended the settings for your thermostat, you’ll need restart Home Assistant.

How it works in practice

So, once set up, if the temperature in our bedroom reaches 19.5°C, the fan will come on. It’ll then stay on until the room reaches 18.5°C, or 20 minutes, whichever happens first.

You can also control the thermostat like you would with, say, a Nest thermostat through Home Assistant. It will create an entity which you can add a card for on your dashboard. So, although you may have set a target temperature in the initial configuration, you can change this without editing your configuration file. However, if you re-start Home Assistant, it may forget this.

If you also use Google Assistant or Alexa, then you can also make them see and interact with your generic thermostat, if you have integrated these with Home Assistant.

Whilst I use a fan and a smart switch, if you have an air conditioning unit with an RF control, you could use an RF bridge to allow General Thermostat to control it.

Fans vs air conditioning

If you do use a fan with Generic Thermostat, you’ll notice that your fan may stay on for a long time. That’s because fans don’t actually cool the air; they move air around which helps sweat evaporate more quickly. That makes you cooler, but not the air around you. It’s a bit like a hot day at the seaside, where the breeze takes the edge off the heat.

Air conditioning systems actually cool the air down, but are much more expensive and need an outlet for the hot air to be pumped out. Most British homes don’t have air conditioning, including ours – most of the year, it’s too cold, and our houses are designed to retain heat.