Stewarts Oil: heating oil quote calculator
Instant heating oil quotes and orders on the Stewarts Oil website, with live pricing and delivery-area checks, moved to a modern API.
- Client
- Stewarts Oil
- Year
- 2025
- Service
- Web Development
The challenge
Stewarts Oil delivers kerosene and gas oil in Ireland. Customers want a price before they order, and prices change, so quotes have to come from the live pricing system.
The existing calculator depended on an old SOAP web service that was being replaced, and the switch to the new REST API could not disrupt customers.
What we built
Quote by litres or by price
Customers enter the litres they need or the amount they want to spend and get a quote straight away.
Live pricing with VAT
Prices come from the live system through the REST API, with VAT calculated on the quote.
Delivery-area checks
Eircode validation and a service-area check, plus a map of the areas Stewarts Oil delivers to.
Order from the quote
Customers, including guests, can place the order directly from their quote.
SOAP to REST migration
Moved from the legacy SOAP service to the new JSON API without changing how the calculator looks or works for customers.
How it works
- Enter the EircodeThe calculator checks the address is in the delivery area.
- Choose litres or spendThe customer picks the product and quantity.
- Get the priceA live quote with VAT comes back from the API.
- OrderThe order is submitted straight from the quote.
Technology
- WordPress
- PHP
- JavaScript
- REST API
- Google Maps
