Honeywell RLV430A 5-2 Programmable Digital Thermostat Review
Wednesday, February 29th, 2012I recently purchased for review, the Honeywell RLV430A 5-2 programmable digital thermostat for the electric baseboard heaters used around my home. At a cost of approximately $53 from Lowe’s home improvement center, I thought they priced this digital thermostat fairly. The RLV430A is much quieter (no clicking sounds as it turns the heaters on and off), as this digital thermostat like its non programmable version (the RLV310A, reviewed here) utilizes an all-electronic switching mechanism (a triac) to switch on and off the 220 volt supply to my 2500 watt resistance baseboard heaters.
This is a programmable thermostat that allows you to set up two different programs; one for the week days (of which there are 5), and the other for Saturdays and Sundays (of which there are 2) (thus 5-2). Each of these programs allows you to set the temperature for four periods. for each period you set the time that that period begins and the temperature that you want the room to be during that period. The weekend days can have a different schedule than the week days.
This is a line-voltage thermostat. So do not try to use it on a central heating system. In fact, the RLV430A is quite similar in appearance and function to Honeywell’s RLV310A thermostat, except for the addition of the clock and programming features.
Here are my impressions of this Honeywell programmable thermostat.
Benefits Of The Honeywell RLV430A Programmable Digital Thermostat
- Honeywell’s supplied installation instructions were easy to follow and straight forward, as was the case with the RLV310A.
- The RLV430A has just two black wires that you hook up as you would a regular light switch into one side of the electric heater supply line.
- Installation of the RLV430A took under twenty minutes and required only a Philips screwdriver since I was just replacing an existing thermostat, and NOT installing a new one from scratch.
- No ground terminal is provided, as the RLV430A is packaged in an all-plastic case; including its mounting plate. This further simplifies installation.
- The Honeywell RLV430A, during power outages, retains all program data, and even retains correct time for several hours.
- Even considering that this unit is programmable (which can make operation rather compex on some models), I nonetheless found operating the RLV430A quite intuitive.
- This unit has numerous buttons; the most used of which are large and are outside the little door that you can close to hide the more advanced-feature buttons. When this door is closed, there are only three buttons exposed; the UP and DOWN buttons, and the mode key. With so few apparent buttons, the RLV430A, in addition to actually being simple to operate, APPEARS very simple to operate as well. If the other buttons (underneath the cover were exposed, some might be put off by the apparent complexity of this unit). But it’s really easy to work, even with those extra buttons for programming.
- The RLV430A responds immediately when you change the temperature set point, and immediately turns on the heater full blast when you raise the temperature, and turns it completely off when you lower the temperature, until the room temperature falls to the new set point.
- In terms of comfort, I like the tight temperature control of the RLV430A, as it allows no more than a plus or minus 0.27 degree temperature swing in the room, before actuating the heater (turning it on or off).
- As the RLV430A limits the size of the temperature swings in the room, the users guide says that savings in heating bills should be significant. This is important when paying for electric baseboard heating, as each room costs a few dollars per day to keep warm as it is.
- This digital thermostat comes with a 1-year warranty.
- You can set the temperature type (C or F), the time format (12 or 24 hour), and you can tell this thermostat whether the heater you’re controlling with it has a fan or not so that the best on-off cycle times are selected.
What I Dislike About the Honeywell RLV430A Programmable Digital Thermostat
- I wish the temperature display on the RLV430A was back lit, so it could be viewed without having to turn on another light in the room.
- The instructions warn against using this thermostat with non resistive loads, which precludes operating very inductive or capacitive heaters (like some that have hefty fans). I wish they;d have built better protection against high voltage or current surges that typically result within inductive or capacitive heaters. But most non-fan heaters are almost purely resistive anyhow, and if yours are of this type, you’re safe, so long as the wattage of your heater does not exceed the capacity of this thermostat (3500 watts maximum)
- The RLV430A offers a very narrow and non adjustable temperature span of approximately 0.5 degrees. That is, when the room temperature falls 0.27 degrees below the set point temperature, this Honeywell digital thermostat turns the heater on. Then, when the temperature rises to 0.27 degrees above the set point, this thermostat turns the heater off. This means that the heater comes on and off several times per minute, which can be distracting when all else in the room is quiet. An adjustable temperature differential provision would have been most useful.
- My particular heaters hum, ping, and clank each time they’re activated. So while I may have eliminated the clicking noises in my old electro-mechanical thermostats by replacing them with the RLV430A, I have exacerbated the noise problem from the heaters themselves. Beware of this if you decide to upgrade to a programmable thermostat like the Honeywell RLV430A.
- As is true with so many consumer electronics devices these days, no audio indication is given on the RLV430A when the UP and DOWN, time setting, and programming buttons are pressed, which can complicate use of this thermostat by blind and vision impaired individuals. Having and audible indication of all button presses would go far toward making this thermostat blind-accessible.
Rating For The Honeywell RLV430A Thermostat
Overall, I’m quite pleased with this digital thermostat. The unit works exactly as described in the included manual, and like the RLV310A non programmable thermostat I’ve reviewed previously, this thermostat revealed that I have very noisy heaters. This just may be the excuse I’ve been looking for to upgrade my cheap heaters to the quieter hydronic units I’ve seen at the stores. I’d rate this device at 97 out of 100.
Where To Buy The Honeywell RLV430A Thermostat
I found mine at Lowe’s home improvement center. But other bigger places like this one carry it too. It’s also available online at eBay or Amazon.
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- Fixing Noisy Electric Baseboard Heaters
- Honeywell RLV310A Non Programmable Digital Thermostat Review
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