Repairs, new installs, tune-ups, and everything in between - one trusted Treasure Valley team keeping Boise homes cool. Same-day service, honest up-front pricing, and 5,000+ five-star reviews behind every call.
Replacing your AC usually means replacing the whole system - here's how to save on it right now.
Install a complete heating & cooling system this September and get $1,000 off plus three free years of Diamond membership.
Call to claimValid through Sep 30, 2026
$500 off any new system installed over the Labor Day period.
Call to claimValid through Sep 7, 2026
Mention the offer when you call. Offers cannot be combined unless stated; some restrictions apply. Financing subject to credit approval.
Cooling repairs and installations for your whole home - tap any to call.
Tap what's happening - repair or replace, we'll sort it out fast.
Not sure if it's time? Call 208-231-1635 - we'll talk through repair-vs-replace honestly.
Not sure which way to go? Here's the quick version - or just call and we'll talk it through. No pressure, no upsell.
We come to you, measure your home, review your existing setup, and design the right system for your space. No pressure, no obligation.
Clear line items, manufacturer warranty details, 10-year Double Diamond Labor Warranty, financing options. Multiple tier options if you want them.
Typically completed in one day. Licensed HVAC technicians, proper refrigerant handling, cleaner-than-we-found-it site standards.
Full performance test under load, thermostat setup, homeowner walkthrough (filters, maintenance, warranty registration), paperwork in hand.
A new AC is expensive. The wrong one, installed wrong, is ruinously expensive. Here's what separates Diamond from cheaper operators who cut corners you can't see.
Sized and designed for your space. No more 'the upstairs never cools' or 'the bedroom is always 6° warmer than the living room'.
High-efficiency systems, properly sized, correctly installed. The savings vs. an old or oversized system are real - and they compound every summer.
Ten years. We're that confident in the install. Parts covered by the manufacturer, labor covered by us. Peace of mind built in.
We quote multiple tier options on every estimate so you can pick the right balance of cost, efficiency, and performance. Here's the general shape.
Central AC installation pricing depends on your home and your existing setup. Here's what drives the quote - and why we never price-guess on the phone.
A 1,500 sqft ranch needs a very different system than a 3,500 sqft two-storey. Getting the size right saves thousands over the life of the system.
A standard-efficiency system and a high-efficiency variable-speed system are priced very differently. We quote tiers so you can choose.
Ductwork condition, electrical service, condenser pad, refrigerant line set - the state of what's already there affects the install scope.
Idaho code changes over the years. Older installs sometimes need electrical or venting upgrades to be compliant. We handle the permits.
Spread the cost over monthly payments. We'll walk you through options on the free estimate.
Diamond was built by Rick and Sue Ellen in 1999 to do home services the way homeowners actually deserve - properly trained technicians, your-quote-is-your-price honesty, and one accountable team for every trade.
Idaho's Best HVAC Company seven years running (2020–2026), Idaho's Best Contractor 2022, and the BBB Torch Award for Ethics in 2014 and 2022.
Same-day AC repairs or a free in-home estimate on a new system - real licensed technicians, honest up-front pricing, no answering service.
"We were impressed with their up-front and clear pricing. John was on time, and explained everything necessary to do with no pressure to do it."
"Diamond Heating and Cooling was very knowledgeable and professional from start to finish. Highly recommended."
"Without a doubt, Diamond Heating and Cooling is the best possible choice you can make when deciding on a company you can rely on to provide excellent service."
Diamond is based in Garden City and serves homeowners across the Treasure Valley & surrounding areas.
Not sure if you're in our area? Call 208-231-1635 - we'll confirm on the line.
Tap the phone to talk live now. Real licensed technicians, your-quote-is-your-price honesty, no answering service.
Same-day AC repairs. Free replacement estimates. Honest pricing. Financing available.
