new air g73 vs dayton

[ducter]

Just got a new air g73 installed and I am wondering if I should have gotten the real dayton. It pushes 200cfm vs the dayton but it is 5k watts just like the dayton, it doesnt have a fan delay or keep the fan running to cool down.


I have a 23*24 garage with 11'6" ceilings, 2 windows, thin uninsulated 16 ft metal door, walls are insulated ,ceiling is 75% insulated. It was 30 degrees outside and the garage started at 45. It took 3 hours and got it to 61 degrees at the other end of the garage. The area around the heater is warmer. It is mounted about 2-3 ft below the ceiling in a corner. I have to keep the tstat at about its highest setting or it thinks the whole garage is warm enough.

Is this reasonable performance? I think that running a regular fan to move the air would help but I am wondering what others think before I return it.

 

[kb2tha]

Being that this is your first post, you are probably unaware of the numerous posts on this board discussing this very topic. Do a search and you will more than likely be returning your New Air for the Dayton.

Welcome to the site. It is full of useful information. Posting your location in your heading would be useful for all of us.
Ken

 

[ducter]

I have read the posts but didnt see anyone who had both and actually felt the dayton was better. I did pm 2 people that had the new air. The only real difference I saw was a 70 cfm difference bewteen the two and I am not sure if that would help enough to merit the return. I did see the King heaters have ones with 400cfm with the same setup.

 

[greencar]

I've asked about the Dayton G73 and the New Air and am going to get the Dayton. The 70 cfm difference is a fair amount. The fact that some dealers start you off with the idea that they are offering a Dayton G73 and then slipping in a New Air unit puts me off. If they have a product that is equal to or better than the Dayton then lets say that and why it is better.

 

[ducter]

FYI My issue is air flow since when I use a fan near the area of the heater to move the air around, it makes a huge difference. I was able to get the garage around 60-65 when it was 45 outside in a about 90 minutes.

 

[jvitez]

Is this reasonable performance? I think that running a regular fan to move the air would help but I am wondering what others think before I return it.

Yes, your numbers are reasonable performance. Your heater works out to 9.1 watt/sq ft which is a good number for constant heating. When you want rapid temperature rise in below freezing conditions you need about 15 watt/sq ft. I had an attached, insulated 22x24 garage in our previous house. I used a 5Kw heater and got somewhat faster performance than your numbers, because I insulated the ceiling to R40. I had much heat stratification towards the ceiling, though some from one end of the garage to the other.

Here's my recommendations:

1. Finish insulating the ceiling. If you get below freezing you'll want at least R30, better would be R40.

2. Use an extra fan to gently circulate the heat. You don't want big blasts of air as it becomes dusty, dries out your eyes, is noisy and uncomfortable. Ideally you'd get a fan you can use in a "hassock" position, blowing up from the floor. It ***** cold air off the floor and blows the hot air down which will circulate the heat in the entire space.

I use this one: http://www.seabreeze.ca/fans/TurboAire/turboaire.html
It's very quiet, and made in Canada, not cChina.

Another option is a ceiling fan, though it would get dusty and need installation and hard wiring.

3. Use a plug in 1500w heater to speed up temperature rise, two if you have 2 separate circuits available. Two plug-in heaters plus your 5kW heater would be 14.5 watts/sq ft.

4. Don't worry about replacing the heater. For 2 heaters of the same output, the one with a higher fan speed will have a lower temperature rise, and the outflowing air will feel colder. An extra 70 cfm isn't worth it. Get a separate circulating fan, one or two cheap plug in heaters, insulate the ceiling, and I'm sure you'll be far happier.

 

[thedak]

I have a NewAir in my attached 28x21 garage. 10' ceiling which is insulated.

Side walls are concrete and not insulated. Backwall is insulated and drywalled.

I have been very happy with its performance.

Of course the farside of the garage is cooler but it isn't a big deal.

Once the side walls are insulated it can only get better.

 

[ducter]

All is well just by using a fan that I had around. Thanks for the responses, glad I dont have to take the thing down. The garage is now easily in the upper 60's. Now to figure out AC....

 

[cycle12]

My g73 heater only blows cold air. Does anyone know why