Portable air con/heat pumps

grumbler

GValue said:

Iv'e been looking at these too @iannewp and I wonder how long they would need to be used for heating and cooling to payback the investment of £500 for a room of 36 sqm with an outside portal, using an Airflex 15W with Wifi? 
https://www.appliancesdirect.co.uk/p/airflex15w/electriq-airflex15w?

An important question here is the design. The description says a lot about smartphone control and other nonsense (like Water Resistant), but says very little about a huge (15cm diameter!) hose that portable aircons need for pumping big volume of hot air (cold when heating) outside. Pumping outside means sucking the same amount of cold or hot air back into a room that makes the efficiency figures questionable.

For the same money you can get a proper split-system aircon most of which can work in heating mode as well.

Moss5

https://www.orionairsales.co.uk/mitsubishi-heavy-industries-air-conditioning-srk25zsp-w-wall-heat-pump-25kw9000btu-a-r32-240v50hz-11227-p.asp
The Mitsubishi would be the best option for a garden office. I had one in my bedroom in Spain and was able to sleep in quiet (23DB) cool air.
New regulations insist on F-gas qualified installers (just like gas-safe with boilers).
https://www.screwfix.com/p/blyss-a018i-12ch-reversible-air-conditioner/835xg#product_additional_details_container
In UK I have this portable installed in a fixed position. We use it to pre-cool our bedroom on the odd occasion that English summers make sleeping difficult.
The noise-level of the portable makes sleeping out of the question.

waqasahmed

grumbler said:

iannewp said:

Thinking about improving conditions in my damp basement , (Has access to an outside wall for vent), not interested in using as air con, just heat and dehumidifier. 

What do you want to achieve? Any electric dehumidifier (except desiccant ones) is essentially a heat pump extracting moisture and heating a room. So is any portable aircon without a vent. And if you want to heat the basement, not cool it, you don't need a vent. A portable aircon will work like a powerful dehumdifier and heat the air at the same time.

Would it fine say to have a portable AC just heat one room when wfh perhaps?

Even if the COP is lower, surely that'd still be cheaper than gas? 

grumbler

waqasahmed said:

grumbler said:

iannewp said:

Thinking about improving conditions in my damp basement , (Has access to an outside wall for vent), not interested in using as air con, just heat and dehumidifier. 

What do you want to achieve? Any electric dehumidifier (except desiccant ones) is essentially a heat pump extracting moisture and heating a room. So is any portable aircon without a vent. And if you want to heat the basement, not cool it, you don't need a vent. A portable aircon will work like a powerful dehumdifier and heat the air at the same time.

Would it fine say to have a portable AC just heat one room when wfh perhaps?

Even if the COP is lower, surely that'd still be cheaper than gas? 

Working from home?

I don't think it's a good idea for a habitable room because it produces two airflows - cold and hot. You have to mix them to avoid creating discomfort.

Even if the COP is lower, surely that'd still be cheaper than gas?

COP?

Generally, if its nominal power is, say, 1kW, it heats a room like any 1kW electric heater. Electric heating is more expensive than  gas, but, possibly, can be cheaper if your CH system cannot heat one room and not heat other places at the same time.