Homeowner’s Guide to Window Air Conditioner Installation

Researchers at the National Renewable Energy Laboratory (NREL) studied window air conditioners on behalf of the U.S. Department of Energy’s Building America program, to understand how they perform and how they could be improved. NREL engineers found that window air conditioner installation resulted in significantly more air leakage. In this video NREL’s team shows a few simple steps to improve both efficiency and comfort of the units. A Homeowner’s Guide, with step-by-step directions, is available online: http://www.nrel.gov/docs/fy13osti/58187.pdf

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How to Install Floor Standing Air Conditioner Mitsubishi Heavy Industries

This is floor standing air conditioner installation video. We take at least one full day to finish the installation process. Install floor standing ac is not too difficult because this air conditioner type is install directly on the floor and it is easy to move everywhere we want to install it. Floor standing is a good advantages on high capacity fast cooling which is the air can reach people faster than other type of the air conditioner. Because the wight of the cool air is heavy that the hot air temperature. That make this floor standing can reach the set temperature from remote controller faster than other.
Mitsubishi Heavy Industries Air Conditioner floor standing type 5.0 horse power. We need to install piping under ground. Enjoy the video and please drop your comments below if you have any questions. Also please check out our suggestion videos below and at the end of the videos.
Installation VRF air conditioner | Mitsubishi Heavy | Testing & Commissioning

Installation Under Ceiling Air Conditioner

Installation Ceiling Cassette VRF

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DIY mini split air conditioning install – start to finish

IMPORTANT SUPPLEMENTAL INFO FOR INSTALLATION:

For anyone interested, these are the items used in the video:
Mini Split: https://ebay.to/2ACiOyl
Wall bracket: https://ebay.to/2FpQOgX
Vacuum pump: https://amzn.to/2ruPSDU
Gauges: https://amzn.to/2KPy0Mi
Adapter: https://amzn.to/2K9gLo6

In this video I walk through the entire process of my DIY installation of my 9000 BTU 110 volt mini split air conditioner from start to finish. I’ve included selecting the location, installing the indoor and outdoor units, including the electrical and copper line hookups, and bleeding the lines.

NOTE: One small correction on the bleed step at the end of the video. Once you have a constant vacuum and turn off the pump and closed the valve, but BEFORE disconnecting the gauges/adapter from the line, release the refrigerant into the lines. This way, when you remove the gauge a tiny amount of refrigerant is released rather than allowing a tiny amount of air into the system.

ADDITIONAL INFO: For the DIY viewers of this video – many an HVAC “expert” has trolled my video for no other reason than to criticize the installation regarding the vacuum procedure and the absence of micron readings. It is true that a micron gauge will tell you the exact level of moisture in the lines. However, micron gauges are expensive (easily over $100) and I did not believe the expense was warranted after a making a DIY cost/benefit analysis for this system. Running the vacuum DOES remove moisture but you won’t know exactly how much without the micron gauge. So if that’s important to you, invest the extra money. You want microns to be 500 or less. If you’re really worried about it, leave the vacuum pump running longer. Your system will still run without such actual knowledge of exact micron information, and in all likelihood will run like mine without any issues. Furthermore, I could replace the whole system two more times before it equals the cost of hired installation. Here’s the cheapest micron gauge I found online if you’re interested: https://amzn.to/2IqTWvy

UPDATE (5/17/2018) – It’s been about nine months since I installed this unit and it’s been working great! No problems whatsoever.

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Don’t lose your cool over the DIY smart home

After two months without aircon, the only thing that stood between my family and a decent night’s sleep was a smart wall switch which insisted on playing dumb – but in the end the switch wasn’t to blame.

This summer we finally decided to replace our dodgy aircon system, which was undersized for the house and has given us nothing but trouble. The new system came with an optional Wi-Fi module, letting me control the aircon from my smartphone, but unfortunately it doesn’t do everything we need.

My aircon is split into two zones; upstairs in the bedrooms and downstairs in the living areas. We only tend to cool one zone at a time, partly to save energy and partly because the old aircon wasn’t powerful enough to do a decent job of cooling both zones on a hot day.

We’ve kept the old ducts and zones but the trouble is that the smartphone app for the new aircon can’t control the zones, they’re controlled by separate wall switches. So I can turn the aircon on and off remotely, but I’m stuck if I want to cool the downstairs zone but the wall switches are set to upstairs. First world problem, I know, but a problem nevertheless.

Get smart

My solution was to replace the two wall switches controlling the zones with two smart wall switches, namely Belkin’s WeMo Smart Light Switch. Technically they’re not designed to do this kind of job, but after talking to Belkin and my aircon guy we decided that the WeMo switches should handle the task – but they couldn’t make any promises.

Unfortunately the aircon installation dragged on and was “one more day” from completion for several weeks. By the end my family was ready to abandon ship, but this week the installation was finally completed.

With the aircon finally up and running, the last simple job was to replace the zone wall switches with the WeMo switches. Except it didn’t go to plan. While the WeMo switches had power, they wouldn’t respond – not even as standard wall switches. Which meant we could run the aircon but not turn on any of the zones, which isn’t very useful

The aircon installer double-checked the wiring and said it was all in order, then left me to sort out the problem over the phone with Belkin’s tech support. Belkin’s people were extremely helpful but we couldn’t solve the problem so I asked an electrician friend to take a look – he wasn’t available until the next day so it was one more long, hot night without aircon even though the system was fully operational.

Crossed wires

To make matters worse, the next morning we had a neighbourhood power outage just before the electrician and his colleague arrived. The power company said it would take all day to fix the problem so I sent them away, but ten minutes later the power was restored so I gave him a call and they rushed back.

At first glance the electricians said the WeMo switches were wired up correctly but, now we had power, closer inspection revealed the neutral wire was not connected. A neutral wire is essential for the WeMo switches and explains why they were misbehaving, if you have an old house without a neutral wire in the wall this is a deal-breaker.

The aircon installer had reassured me he’d wired the WeMo switches correctly, and I wisely wasn’t prepared to pop them off the wall myself and double check.

With the neutral wire connected the WeMo switches started to respond, I could configure them via the WeMo app but when I turned one on it would trip the circuit breaker in the fuse box (the aircon and zone switches are on their own circuit). We thought the problem was with the WeMo switches, but we put back the original wall switch and it still tripped the circuit.

At this point they climbed in the roof to look at the aircon and realised that whoever installed the original system used the wrong coloured wiring and it was a complete mess. Once they rewired the wall switch the aircon zones were up and running.

Switched off

While they were up in the roof, the electricians discovered that the motors which open and close the aircon zones require “two-position” switches rather than simple on/off light switches, which meant the WeMo switches weren’t up to the task. Apparently most aircon zone motors work this way, which means if you’re in this position then an on/off WeMo Smart Light Switch probably isn’t going to solve your problem – but you won’t know until you check your zone controller motors in the roof.

Belkin tells me it doesn’t make WeMo two-position switches so I’m back where I started. There was also a question as to whether the WeMo switches designed for resistive lights would work with an inductive motor. I didn’t get a final answer on that but it became a moot point when we realised we needed two-position switches.

For now the aircon is up and running properly, for the first time since Christmas, although I’ve realised that the Wi-Fi module isn’t responding, so it looks like more fun and games are ahead before I can use the smartphone app.

Do you have a smart home DIY grand plan? What hassles have you run into along the way?