Navisizer vs Peirce Phelps HVAC Pro+

NaviSizer is designed to assist with sizing of domestic hot water heating systems with Navien NPE Series tankless water heaters. For residential applications, NaviSizer offers system sizing, calculation of operating cost and savings, and provides a comprehensive output to be used as a job spec. For commercial applications, NaviSizer uses ASHREA Hunter Curve calculations to size a broad range of applications. Both tankless and tankless with storage solutions are offered along with a comprehensive system spec that can be saved, printed, or emailed.

Peirce Phelps strives to make life as an HVAC Professional easier, saving you time and hassle through innovation. Our mobile app provides access to product information and easy to use tools while on the go. * Sign in to link your online account to view prices, add to cart and check orders (SIGN IN) * See real-time availability for your preferred branch and other nearby Peirce Phelps branches (PRODUCTS) * Search by system needs to find AHRI matched systems with real-time inventory and system pricing (AHRI) * Verify warranty entitlement while at the customers home (WARRANTY) * Search for an HVAC equipment model, view the parts list and superseded parts, check availability at Peirce Phelps locations (PARTS LIST) * View spec sheets, wiring diagrams, installation guides, consumer literature, etc. for Peirce Phelps products (DOCUMENTS) * See nearby Peirce Phelps locations, their hours of operation, get directions, call the store (STORES) * Receive push notifications of special offers & promotions at Peirce Phelps * Scan QR code & UPC bar codes for fast product look ups * See turn by turn driving directions, through your favorite mapping app, to Peirce Phelps locations * Duct calculator to help determine duct size, material and specifications for new installations and retrofits (CALCULATORS) * Light up attics, closets and basements while you work (FLASHLIGHT) * Also, the app now remembers your last 10 searches Our mission is to deliver the quality HVAC products you need, when you need them, and provide expert technical support. Our goal is to be your HVAC Supplier of Choice. We know you have a choice when buying all your HVAC related items. Thank you for trusting Peirce Phelps. We are proud to have the opportunity to serve you.