Supplemental Cabin Heat.

[goodyFAB]

i dont have a bravo, but i have a rocket. that seems odd. i sometimes i want more heat near my feet i take my checklist and drop it in front of the floor vent and it pushes heat to both sides of plane. most of the time its too warm. -20 is never a problem. i would check your mixing box, and your shrouds for leaks. the only time i sometimes lose heat is when its really cold and i dont keep enough power in on descent. 

[Jetpilot86]

I found a couple of half squares used to keep straps from chafing loads on flatbeds. Turns the air left and right or the 45° angle will direct the air up from the floor. Helped out a lot yesterday. 

[GeeBee]

I have found on my Ovation, if it is super cold and I am running LOP, I don't have enough heat. Running 75 ROP gives me more than enough heat. The only thing I can figure out is the flame goes further down the stack thus providing more heat to the exchanger. If you have ever flown a twin with radials, you know what I mean. That all said, in cold climates as when I was flying out of Anchorage, a check S/O counseled me to get a pair of silk long johns. They are amazing, to the point I wear them regularly in the winter even now. Besides keeping you warm and toasty they do not overheat you when you enter a heated environment such as a heated room or cockpit. Really good for going inside and outside without suffering over heat or under temp. Land's End, LL Bean et al have them. Not cheap but worth every cent.

[Boscof16]

Same here, Bravo doesn't seem to produce much heat in the winter. I don't think it's normal; it looks like it shouldn't be. Any ideas what might be going on?

[donkaye, MCFI]

13 minutes ago, Boscof16 said:

Same here, Bravo doesn't seem to produce much heat in the winter. I don't think it's normal; it looks like it shouldn't be. Any ideas what might be going on?

Something must be going on because my Bravo puts out plenty of heat.

[Jeff Uphoff]

On 5/19/2025 at 3:01 PM, GeeBee said:

I have found on my Ovation, if it is super cold and I am running LOP, I don't have enough heat. Running 75 ROP gives me more than enough heat. The only thing I can figure out is the flame goes further down the stack thus providing more heat to the exchanger. If you have ever flown a twin with radials, you know what I mean. That all said, in cold climates as when I was flying out of Anchorage, a check S/O counseled me to get a pair of silk long johns. They are amazing, to the point I wear them regularly in the winter even now. Besides keeping you warm and toasty they do not overheat you when you enter a heated environment such as a heated room or cockpit. Really good for going inside and outside without suffering over heat or under temp. Land's End, LL Bean et al have them. Not cheap but worth every cent.

In 3+ years of owning my current Ovation, I've only found one time where its heater wasn't up to the task of keeping me reasonably warm--I did a nonstop flight from Nebraska to Virginia this past winter at 15k' to take advantage of tailwinds, and it was a bitter cold day--especially the further east I went. I was flying closer to peak than truly LOP, given the engine's low power production at that altitude.

(Yay for wool socks and flannel-lined jeans!)

--Up.

[Fritz1]

Bravo heater has plenty of heat with cabin and heat ducts sealed well, I had a cold air leak from wemac valve in pilot footwell, butterfly in heat valve in copilot footwell has bleed openings that can be sealed for additional power, plenty of heat at cruise down to -30F, not so much during taxi and climb, airflow through heat muff is just not there, send all heat through defrost blower up to windshield, keep rag handy for wiping frost from inside of windshield