Frequently Asked Questions (FAQs) | Third Federal
Review frequently asked questions about our services including CDs, checking accounts, deposits, home equity, online banking, security & more. Find a question!
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Buying a Home | Mortgage Refinance
Third Federal offers guarantee low-rate mortgage refinance, preapprovals, and mortgage purchases. Compare mortgage rates and start the borrowing process today.
Purchasing a Home | Mortgage Calculators | Mortgage Rates
Use Third Federal mortgage calculators for detailed financial planning including 15 yr vs. 30 yr, interest savings, adjustable rates, & savings. Learn more & apply today!
Test Facilities
Sandia provides trusted, independent, third-party testing and validation of electrical energy storage systems and advanced storage technologies, from cell to MW systems in both grid and simulated
Deposits | Savings | CD Rates | Third Federal Savings & Loan
Discover Third Federal deposit options, including competitive CD rates, low minimums, and FDIC‑insured savings backed by five‑star strength and stability.
Login | Mobile Banking | Online Banking | Third Federal
Online Banking at Third Federal Easily access your accounts with Third Federal Online Banking. View account balances, make payments, and enroll in electronic delivery for statements and documents
Open Deposit Account | Rates | Third Federal
For detailed information when planning finances, use our list of calculators for savings accounts such as college, IRA, Social Security, taxes & inflation.
Contact Us
Contact us today by email or phone to inquire about any of our mortgage, home equity, refinance, savings, CDs, or checking account services.
Mortgage & Home Equity Lender | Third Federal Savings & Loan
We offer guaranteed low-rate mortgages, home equity lines of credit, savings accounts & more! Use our calculators, review rates & apply for a loan today!
Energy Storage Systems (ESS) Testing and Certification
ESS manufacturers, battery and system integrators, utilities, and commercial energy storage operators seeking compliant, independent third-party ESS testing and certification.
Home Equity Lines of Credit | Home Equity Lender | Third Federal
Get a flexible Third Federal Savings & Loan home equity line of credit (HELOC) with low rates, no fees, and a 10‑year draw period. Access funds by check or debit card and enjoy a
Savings Accounts | Rates & Apply | Third Federal
At Third Federal, our Interest Savings Account can pay you the highest rate. You can open this account as a regular savings account or as an IRA account—the choice is yours.
Energy Storage System Testing and Certification
Safety Testing and Certification For Energy Storage SystemsUnderstanding Ul 9540 and Ess CertificationEss Performance and Reliability TestingMarking For Energy Storage SystemsCustom Research of Energy Storage SystemsLarge batteries present unique safety considerations, because they contain high levels of energy. Additionally, they may utilize hazardous materials and moving parts. We work hand in hand with system integrators and OEMs to better understand and address these issues.See more on ul
Videos of Third-Party Testing Equipment for Energy Storage Systems
Watch video0:08Rigorous Pre-Shipment Testing for 280kWh High-Voltage BESS GSL ENERGY2.3K viewsApr 7, 2025Watch video0:09The Key to Robust PV Modules: Fully Automated Mechanical Load Tester Testing Equipment Glass48 views1 month agoWatch video4:39How to conduct a charge-discharge test on two container energy storage systems? ⚡ 🔋 #lithiumbattery United Energy146 views5 months agoSee moreIntertekEnergy Storage Testing and Certification - Intertek
Intertek provides comprehensive energy storage testing and certification services to help you achieve compliance, enhance product safety, and gain market