I doubt you have to remove the steering wheel for an HVAC repair. Form your explanation, I suspect you just need a new heater control valve or thermostat that is easy to replace. I strongly recommend you go to Car Talk’s Mechanics Files site at
Enter your zip code and you will get a list of mechanics in your area that other consumers have used and highly recommend. Look for ones that specialize either in the make of your car or the type of repair you need. Call 2-3 of them, explain the problem and ask for a ballpark figure on the repair. Go with the one that sounds most knowledgeable. I have personally used this site with great success to find good honest mechanics and can highly recommend it. Good luck!