--- title: South Central Services Spray Foam Blog | HVAC description: HVAC | Learn more about spray foam insulation from local experts in Greencastle, PA! Compare insulation products, estimate costs, see product reviews, and more. --- [Skip to main content](https://scsfoam.com/blog/tag/hvac#maincontent) [(717) 895-3498](tel:7178953498) [![South Central Services Insulation](https://scsfoam.com/hs-fs/hubfs/branding/Website%20Logo%20Classic.png?width=900&height=300&name=Website%20Logo%20Classic.png) ![South Central Services Insulation](https://scsfoam.com/hs-fs/hubfs/branding/Website%20Logo%20White.png?width=900&height=300&name=Website%20Logo%20White.png)](https://scsfoam.com/) [Our Service Areas](https://scsfoam.com/our-services-areas) Pricing - [Our Rates](https://scsfoam.com/our-rates) - [Calculators](https://scsfoam.com/pricing-calculators) - [Financing](https://scsfoam.com/financing-options/) - [Rebates](https://scsfoam.com/rebates) [Our Team](https://scsfoam.com/our-team) Services - Residential Insulation - [Attic Insulation](https://scsfoam.com/attic-insulation) - [Basement Insulation](https://scsfoam.com/basement-insulation) - [Crawl Space Repair](https://scsfoam.com/crawl-space-encapsulation) - [Commercial Spray Foam](https://scsfoam.com/commercial-spray-foam/) - [New Construction Insulation](https://scsfoam.com/new-home-construction-insulation/) - [Pole Building Insulation](https://scsfoam.com/pole-building-insulation) - [Air-Sealing](https://scsfoam.com/air-sealing) - [Blower Door Tests](https://scsfoam.com/blower-door-tests) [Our Products](https://scsfoam.com/our-products) Learning Center - [Learning Center](https://scsfoam.com/learning-center) - [Downloadable Resources](https://scsfoam.com/downloadable-resources) - [FAQ](https://scsfoam.com/faq/) Open Search [Get A Quote](https://scsfoam.com/contact/) Search for topics or resources Enter your search below and hit enter or click the search icon. 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May 19th, 2025|3 min read [Building Science](https://scsfoam.com/blog/topic/building-science) | [HVAC](https://scsfoam.com/blog/topic/hvac) ## Why Does My Central Air Run All Day? August 19th, 2024|3 min read [HVAC](https://scsfoam.com/blog/topic/hvac) ## How To Properly Vent A Bathroom Fan June 28th, 2024|4 min read [Building Science](https://scsfoam.com/blog/topic/building-science) | [HVAC](https://scsfoam.com/blog/topic/hvac) ## What Is A Heat Recovery Ventilator (HRV)? September 4th, 2023|3 min read [Building Science](https://scsfoam.com/blog/topic/building-science) | [HVAC](https://scsfoam.com/blog/topic/hvac) ## What Is An Energy Recovery Ventilator (ERV)? 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