Category: Heating and Cooling

Article

These Google Nest thermostats will be able to let you know if the heating or cooling is about to break down

Nest thermostats in the US and Canada can now monitor your HVAC system | Engadget

From the horse’s mouth

Google

Behind the scenes with the new Nest Thermostat (Blog Post)

HVAC Monitoring from Google Nest (Support Article)

My Comments

Google has added a notification function to their range of Nest smart room thermostats to let you know if the heating or air-conditioning is failing.

This has been a side project of theirs as part of the main Nest Smart Thermostat effort but is now finished. It will be available not just to the latest Nest thermostats but also for older models installed in the US and parts of Canada. The functionality will only work with forced-air systems that we in Australia often refer to as “ducted” systems, most likely because they are the most common type of residential heating / cooling setup in the US.

The functionality detects anomalies in how quickly the home heats up or cools down to the temperature the thermostat is set at. For example, it will alert you if it is becoming colder or taking too long to heat up while the heating is actually on; or becoming warmer or taking too long to cool down when the air conditioning is actually on. This will usually highlight a failing air-distribution fan or the burner in a heating system not staying alight while needed.

As well, it monitors the HVAC system’s control circuitry to identify abnormal shutdown activity or whether it is actually on and working as intended. Here, it observes conditions where the gas-fired heating may intermittently fail to light up or stay alight for the duration of the heating cycle or the air-conditioning fails to start cooling or runs longer than expected,

You receive the reports via e-mail or the Google Home App or a “heads-up” alert can be indicated on the thremostat itself. In most cases, you will have to call out your HVAC technician to rectify the problem. The “early alerts” functionality can be of use if you have your HVAC technician service your system regularly so it is working reliably and safely for the seasons that matter.

At the moment, Google encourages the use of “Nest Pro” technicians who partner with them to supply and install the thermostats or the “Handy” tradespeople platform who partners with Google. This allows for you to book them to attend to your system at the times that suit you through these platforms.

Thanks to the use of standard heating/ventilation/air-conditioning wiring setups that the Google Nest thermostats use to interface with the heating and air-conditioning, there is no need for this kind of system-health monitoring to be dependent on the use of a particular brand, model or series of HVAC system. This factors in the reality that “durable” products like these systems are expected to last many years and there is the requirement to allow newer thermostats like these to work with the older systems that are still in service.

Here, what I am pleased about is the idea of Google allowing a smart thermostat to be able to alert you to your heating or cooling system being at risk of underperforming or failing to make it through the seasons that matter. Hopefully they will have this kind of functionality for other types of heating or cooling setup or available in other markets. I also see this as a direction for smart thermostats from other manufacturers to alert you to the state of your HVAC setup.

Articles

GLAS thermostat powered by Windows 10 IoT Core operating system launched | WinCentral

Microsoft’s Glas thermostat knocks Nest with Cortana and air quality monitoring | Digital Trends

From the horse’s mouth

Johnson Controls

GLAS room thermostat

Product Page

Spec Sheet (PDF)

Video – Click or tap to play

Microsoft

Video – Click or tap to play

My Comments

Google’s Nest smart thermostat is facing competition with a unit that is driven by Microsoft technologies. Here, the Johnson Controls GLAS smart thermostat, which works with most central heating and air-conditioning setups that implement standard 24-volt wiring setups, connects to your home network via Wi-Fi and is built on a Windows 10 IoT Core operating system and the Universal Windows Platform.

Here, this means that it works tightly with Bing as its external data source for air-quality and current-local-weather metrics. As well, it works as a Cortana terminal so you can control the heating using your voice, but have access to other information resources you would be able to have access to if you used Cortana from your Windows 10 computer. At the moment, judging from the various YouTube videos I have seen of this device in action, this user experience will be audio-only but future firmware updates could provide visual support for Cortana’s replies.

The GLAS room thermostat implements the usual scheduling abilities that the typical programmable room thermostat offers but allows for preemptive operating for when you arrive or wake up so your home is nice and comfortable for you. There is the ability to know what the indoor and outdoor air quality is to be like as well as letting the current weather forecast be used to affect the system’s setpoint (comfort level). It could provide the answer about whether it is important to take that Ventolin inhaler with you if you are suffering from asthma that is aggravated by pollen or similar allergens.

The user interface is based on a colour OLED touchscreen which is actually a piece of translucent glass so you can effectively see the wall behind the thermostat. This means you are engaging with a user experience similar to that of a smartphone or tablet. As well, it would please those of us who place emphasis on devices that complement our room aesthetics. Let’s not forget that you could manage it from a Web page or your iOS / Android smartphone through a native app.

At the time of publication, the expected retail price for the GLAS Smart Room Thermostat will be US$319 with it expected to be released to the US market in March. Here, it will be available through the Microsoft Store or through Johnson Controls Website and dealers.

But what do I see of this thermostat? I see the possibility of it being one of many “smart devices” that will become a control surface for your smart home. In an increasing number of cases, it could also be a point of interaction for a voice-driven home-assistant platform like Alexa, Cortana or Google Assistant with the integrated display earning its keep for visual-support functionality. This is where you could use this thermostat’s touchscreen or Cortana interaction to manage something like lighting or music, or “call up” information at a glance with the information appearing on that display.

Article

Google Home welcomes 12 new partners in big smart home update | CNET

Frigidaire Cool Connect uses app-linked smarts to chill hot homes | CNet

Dreading summer already? Frigidaire’s smart window air conditioner lets you cool on demand | Digital Trends

From the horse’s mouth

Frigidaire USA

Frigidaire Smart Room Air Conditioner with Wifi Control

Product Page (8000 BTU model / 10000 BTU model / 12000 BTU model )

My Comments

Typically, the traditional single-piece room air-conditioner that was installed through a window or a wall cut-out was never seen as anything special by their manufacturers. These noisy boxes that kept your room cool (or warm in the case of reverse-cycle units) didn’t come with anything special as far as their features were concerned.

Recently-issued models started to come with remote control abilities but could be controlled using your home network thanks to a Tado or similar “virtual-remote-control” kit. But Frigidaire raised the ante for this class of air-conditioner by offering a model that can directly work with your home network.

The Frigidaire Cool Connect air-conditioner can be installed in a window like the rest of these beasts but this is where the similarity stops. Here, it looks very similar to one of the advanced network-capable multiroom speakers thanks to a mesh-like grille that covers the bottom half of the unit. The top edge of the unit has the output vents that blow the air upwards and may limit its installation to somewhere up to halfway up the wall.

As well, the essential controls such as to turn it off and on or adjust the comfort level are simply touch-buttons on the top edge towards the front while the temperature is shown through the front of the unit. There is also a card remote control that you use for managing the essential functions from afar.

But the difference with this room air-conditioner compared to the others out there is that can connects to your home network via Wi-Fi and be controlled using an iOS or Android app. Here, you can control the essential functions or set the 24-hour timer for pre-emptive scheduled cooling such as to have your place cool before you arrive. Here, these functions can be managed over the Internet, which can be good for starting the Frigidaire Cool Connect air-conditioner to get the home cool well before you arrive as a way of dodging that heat-wave.

A feature that impressed me about the Frigidaire Cool Connect air-conditioner is that you can have a cluster of these units controlled as a group. This can be of use with larger areas where a single unit isn’t enough to cool a room or premises down. Or you have individual units installed in particular rooms like a bedroom and the living room but want to manage them both at once for actions like dropping that heat-wave temperature down or turning them off when it’s cold enough.

Let’s not forget that you can use a device that supports the Google Home or Amazon Alexa voice-driven home assistants to control the Frigidaire Cool Connect air-conditioner. Here, you could issue commands for the essential functions like turning the system on or off or increasing or decreasing the comfort level.

What has been shown here is that Frigidaire, now a part of the Electrolux appliance behemoth, is raising the bar for an appliance class often overlooked by many other appliance manufacturers. Here, they have offered a single-piece window-mount room air-conditioner that can be part of the connected home.

Article

There needs to be a level of cyber-security awareness regarding the design and maintenance of building-automation systems

Finns chilling as DDoS knocks out building control system | The Register

My Comments

Two apartment buildings in Finland became victims of distributed denial-of-service attacks which nobbled their building-management systems. This caused the buildings’ central heating and domestic hot water systems to enter a “safety shutdown” mode because the remote management systems were in an endless loop of rebooting and both these systems couldn’t communicate to each other. The residents ended up living in cold apartments and having cold showers because of this failure.

What is being realised is that, as part of the Internet Of Things, building-management equipment is being seen to be vulnerable, due to factors like the poor software maintenance and an attitude against hardening these systems against cyber-attacks. Then there is the issue of what level of degraded-but-safe functionality should exist for these systems if they don’t communicate to a remote management computer. This also includes the ability for the systems themselves to pass alarm information to whoever is in charge.

This situation has called out data-security issues with design and implementation of dedicated-purpose “backbone devices” connected to the Internet; along with the data-security and service-continuity risks associated with cloud-based computing. It is also an issue that is often raised with essential services like electricity, gas and water services or road-traffic management being managed by Internet-connected computers with these computers being vulnerable to cyberattack.

One of the issues raised included the use of firewalls that run up-to-date software and configurations to protect these systems from cyberattack.

I would also look at a level of fail-safe operation for building management systems that can be implemented if the Internet link to remote management computers dies; along with the ability to use cellular-telephony SMS or similar technology to send alarm messages to building management during a link-fail condition. The fail-safe mode could be set up for a goal of “safe, secure, comfortable” quasi-normal operation if the building-local system identifies itself as operating in a safe manner.

Article

Tado Smart Air-Conditioner Control in action

Tado Makes Your Dumb AC Smart | Tom’s Guide

Video

Previous Coverage

Tado Cooling brings the smart thermostat concept to the typical air conditioner

From the horse’s mouth

Tado

Smart AIr Conditioner Control

Product Page

To Buy

My Comments

Tado previously initiated a Kickstarter campaign to get the idea of a smart air-conditioner control device up and off the ground. Now this idea has successfully come to fruition and is available for regular sale.

The Tado Smart air-conditioner controller works with air-conditioners controlled by these devices

The device works like the newer smart thermostats but controls air-conditioners that are typically controlled by an infra-red remote control and adds network-based remote control along with the extras associated with it to these systems.

It answers a reality where there is a large number of these air-conditioners; whether in an integrated unit that installs through a wall or window, a portable unit or the more common ductless-split units; that are in service for a long time. Like with anything that is about maintaining comfort in the home, there is a resistance by most of us to substitute the existing unit unless it has broken down beyond repair or too uneconomical to use.

The Tado Smart Air-Conditioner controller is a white box with a white-LED dot-matrix display that serves as the user display. This has to be installed in line-of-sight of the air-conditioner unit because it substitutes the role of that remote control that the A/C depends on. As well, it connects to your home network (and Internet) via Wi-Fi wireless and also supports Bluetooth Smart for proximity detection.

As well, you install an app in your smartphone to turn it in to a control surface for this controller. But it is not just about setting your air-conditioner’s temperature, fan-speed and operating mode from your smartphone’s display but also about functionality like geo-fencing and IFTTT or HomeKit connectivity.

The geo-fencing, IFTTT and HomeKit functionality allow you to have the air-conditioner turned off when you actually leave or switch it on just before you get home so it is comfortable by the time you are there. As well, the Wi-Fi functionality that the Tado Smart A/C controller provides will also be a godsend to those of you who manage your holiday home or shopfront so you can get these places warm or cool by the time you arrive.

Tado are intending to release a multiple-AC function to this controller soon so as to to allow you to manage the growing reality of places with more than one air-conditioner. This will obviously handle the common situation where there is one unit per room but I would like to know whether this multiple-AC function can handle larger rooms heated or cooled by multiple air-conditioners.

What this shows is a Kickstarter project that satisfies a genuine need as is actually put to market in a real continual way. It is also about gaining more value out of existing equipment by enabling it for today’s expectations.

Article

The Nest thermostat now on new firmware

Google’s Nest thermostat becomes a faster learner with major software update | PC World

From the horse’s mouth

Nest.com

Software update product page

My Comments

As the Internet Of Things starts to evolve slowly, there has been news about a home-automation device being “refreshed” with new firmware with the ability for equipment in current use to benefit from the software update.

Here, the Nest thermostat will benefit from a large software update which improves its learning abilities and preemptive operation functionality. Rather than having the user spend a lot of time adjusting the system to suit their lifestyle, this thermostat can learn your requirements more quickly. As well, Google published an API so it can interact with other devices and become part of the “Internet Of Things”.

Google tweaked the operation algorithm using a continual “opt-in” feedback loop involving existing users and this could be seen as a way to further fin-tune any machine-learning or “preemptive operation” algorithms. There is also other functions like time and outdoor temperature / humidity display abilities as well as a “system check” function to help you troubleshoot your central heating or air-conditioning, especially before a season change.

The Nest thermostat will receive the updates by itself as long as it is connected to your home network and the Internet. This allows for a hands-off update process and is an example of what should be done to allow for reliable and secure operation of equipment that is part of the “Internet Of Everything”.