# Comfy Castle Heating and Air > Family-owned HVAC company in 6635 S Dayton St, #310, Greenwood Village, CO 80111, serving the North and South Denver Metro Area. Keeping the Kingdom Comfy, One Castle at a Time. License # AEC01319 / LIC00252624. Google rating 5.0 (129+ reviews). BBB Accredited Since 9/30/2024 · A Rating. Phone (303) 227-9999 · comfycastlehvac@gmail.com. - Hours: Mon–Fri: 8:00 AM – 6:00 PM · Saturday: 8:00 AM – 4:00 PM · Sunday: Closed - Same-day & emergency service available - Owner: Nathan Hernandez, Owner & HVAC Expert - Financing: Flexible monthly payment options through Wisetack via Housecall Pro — see your options in minutes with no impact to your credit score. ## Services - [Thermostat & Air Quality](https://www.comfycastlehvac.com/thermostat-in-home-air-quality-solutions) - [Mini-Split](https://www.comfycastlehvac.com/mini-split) - [Furnace](https://www.comfycastlehvac.com/furnace) - [Air Conditioner](https://www.comfycastlehvac.com/air-conditioner) - [Heat Pump](https://www.comfycastlehvac.com/heat-pump) - [Humidifier](https://www.comfycastlehvac.com/humidifier) - [All services](https://www.comfycastlehvac.com/services) ## Service Areas (Colorado) - [Denver, CO](https://www.comfycastlehvac.com/service-areas/denver) - [Aurora, CO](https://www.comfycastlehvac.com/service-areas/aurora) - [Boulder, CO](https://www.comfycastlehvac.com/service-areas/boulder) - [Louisville, CO](https://www.comfycastlehvac.com/service-areas/louisville) - [Lafayette, CO](https://www.comfycastlehvac.com/service-areas/lafayette) - [Henderson, CO](https://www.comfycastlehvac.com/service-areas/henderson) - [Thornton, CO](https://www.comfycastlehvac.com/service-areas/thornton) - [Brighton, CO](https://www.comfycastlehvac.com/service-areas/brighton) - [Northglenn, CO](https://www.comfycastlehvac.com/service-areas/northglenn) - [Westminster, CO](https://www.comfycastlehvac.com/service-areas/westminster) - [Broomfield, CO](https://www.comfycastlehvac.com/service-areas/broomfield) - [Arvada, CO](https://www.comfycastlehvac.com/service-areas/arvada) - [Commerce City, CO](https://www.comfycastlehvac.com/service-areas/commerce-city) - [All service areas](https://www.comfycastlehvac.com/service-areas) ## Learning Center - [Why Is My Furnace Short Cycling? A Colorado Homeowner's Guide](https://www.comfycastlehvac.com/learn/furnace-short-cycling-colorado): What short cycling is, why Colorado furnaces do it (clogged filters, flame-sensor trouble, oversizing, altitude), when to call a pro, and what a repair visit looks like. - [How Long Does an Air Conditioner Last in Colorado?](https://www.comfycastlehvac.com/learn/how-long-does-an-ac-last-colorado): Typical AC lifespan on the Front Range, what shortens it (hail, dust, skipped maintenance), the signs a system is at end of life, and how to decide what to do next. - [Do Heat Pumps Work in Colorado's Climate? What Homeowners Should Know](https://www.comfycastlehvac.com/learn/heat-pumps-in-colorado): How cold-climate heat pumps perform on the Front Range, where they fit (and where dual-fuel makes more sense), common misconceptions, and how to evaluate one for your home. - [Whole-Home Humidifiers: Fixing Colorado's Dry-Air Problem](https://www.comfycastlehvac.com/learn/whole-home-humidifiers-colorado): Why Front Range homes get painfully dry in winter, what a whole-home humidifier does, target humidity levels, maintenance that prevents problems, and when to install one. - [Wildfire Smoke Season: How to Keep Your Indoor Air Clean in Colorado](https://www.comfycastlehvac.com/learn/wildfire-smoke-indoor-air): What wildfire smoke does to indoor air, how your HVAC system can fight it — filtration, fan settings, ventilation — and what actually works on the Front Range's smoky days. - [AC Repair or Replace? An Honest Framework for Denver-Metro Homeowners](https://www.comfycastlehvac.com/learn/ac-repair-vs-replace): A clear decision framework: the $5,000 rule, the R-22 question, efficiency payback math, when repair is the right call, and the traps that push people into buying too soon. - [Mini-Split vs. Central Air: Which Fits Your Colorado Home?](https://www.comfycastlehvac.com/learn/mini-split-vs-central-air): An evaluation guide: how ductless mini-splits and central systems differ in cost, comfort, and fit — and the specific home types on the Front Range where each one wins. - [Smart Thermostats and Air-Quality Upgrades: What's Actually Worth It?](https://www.comfycastlehvac.com/learn/smart-thermostats-and-air-quality): An honest evaluation of smart thermostats, better filtration, humidification, and ventilation for Front Range homes — what delivers, what disappoints, and in what order to buy. - [Furnace Repair or Replace? The Decision Framework for Colorado Winters](https://www.comfycastlehvac.com/learn/furnace-repair-vs-replace): When repairing an aging furnace makes sense, when replacement wins — heat-exchanger cracks, the 15-year question, efficiency math at altitude — and how to decide before the next cold snap forces it. - [Replacing Your AC? Why Your Next One Might Be a Heat Pump](https://www.comfycastlehvac.com/learn/should-your-next-ac-be-a-heat-pump): The one-time decision window when an AC dies: pay slightly more for a heat pump that also heats, or replace like-for-like. The Colorado math, the dual-fuel option, and who should skip it. - [HVAC Glossary](https://www.comfycastlehvac.com/glossary): plain-English definitions of HVAC terms ## Company - [About Us](https://www.comfycastlehvac.com/about) - [Reviews](https://www.comfycastlehvac.com/review): real Google reviews, 5.0 rating - [FAQs](https://www.comfycastlehvac.com/faqs) - [Financing](https://www.comfycastlehvac.com/financing) - [Contact](https://www.comfycastlehvac.com/contact): request service online or call (303) 227-9999 ## Legal & Access - [Privacy Policy](https://www.comfycastlehvac.com/privacy) - [Terms & Conditions](https://www.comfycastlehvac.com/terms) - [Accessibility Statement](https://www.comfycastlehvac.com/accessibility) - [Human sitemap](https://www.comfycastlehvac.com/sitemap) · [XML sitemap](https://www.comfycastlehvac.com/sitemap.xml) For full page content see https://www.comfycastlehvac.com/llms-full.txt.